Lyrica Linked to Birth Defects

By Pat Anson, Editor

A drug widely prescribed to treat fibromyalgia, neuropathy and other chronic pain conditions increases the risk of major birth defects, according to a new study published in Neurology, the medical journal of the American Academy of Neurology.

Women taking pregabalin were six times more likely to have a pregnancy with a major defect than women who were not taking the drug, the study found. The birth defects included heart defects and structural problems with the central nervous system (CNS) or other organs. Birth defects due to chromosomal abnormalities were not included in the results.

Pregabalin is the generic name of Lyrica, which is approved by the FDA to treat diabetic nerve pain, fibromyalgia, epilepsy, post-herpetic neuralgia caused by shingles and spinal cord injury. It is also prescribed “off label” to treat a variety of other conditions. Lyrica is Pfizer’s top selling drug, generates over $5 billion in annual sales, and is currently approved for use in over 130 countries.

The international study involved nearly 700 pregnant women in seven different countries. Four of the 125 women who took pregabalin during pregnancy had children with central nervous system defects, or 3.2 percent. That compares to a birth defect rate of just 0.5% in the 570 women who did not take pregabalin.

Of the women taking pregabalin, 115 were taking it to treat neuropathic pain, 39 were taking it for psychiatric disorders, including depression and anxiety, five were taking it for epilepsy, and one for restless leg syndrome.

Most of the women started taking pregabalin before they became pregnant. All of them stopped taking the drug at an average of six weeks into their pregnancies.

A small number of women also took another anti-seizure drug during their pregnancy. Women in that group had a 6 percent chance of a major birth defect, compared to 2 percent of the women who did not take another anti-seizure medication.

“We can’t draw any definitive conclusions from this study, since many of the women were taking other drugs that could have played a role in the birth defects and because the study was small and the results need to be confirmed with larger studies, but these results do signal that there may be an increased risk for major birth defects after taking pregabalin during the first trimester of pregnancy,” said study author Ursula Winterfeld, PhD, of the Swiss Teratogen Information Service and Lausanne University Hospital in Lausanne, Switzerland.

“Pregabalin should be prescribed for women of child-bearing age only after making sure that the benefits of the drug outweigh the risks and after counseling them about using effective birth control. In cases where women have taken pregabalin during pregnancy, extra fetal monitoring may be warranted.”

A spokesman for Pfizer said the study was small and the findings could have been influenced by other factors.

"As the authors agree, the study has significant limitations and cannot be used to draw definitive conclusions," Steven Danehy said in an email to Pain News Network. "The study was small, did not account for other medical conditions or medications, and the women taking Lyrica had higher rates of smoking and diabetes, all of which can negatively affect pregnancy outcomes."  

Because women are more likely than men to have a chronic pain condition such as fibromyalgia, they are the biggest consumers of Lyrica.

The FDA warning label for Lyrica does not specifically warn pregnant women not to take the drug. But it does caution them to consult with a doctor if they are pregnant or plan to become pregnant.

“It is not known if Lyrica will harm your unborn baby. You and your healthcare provider will have to decide if you should take Lyrica while you are pregnant. If you become pregnant while taking Lyrica, talk to your healthcare provider about registering with the North American Antiepileptic Drug Pregnancy Registry,” the label says.

The label also cautions men to see a doctor if they plan to father a child while taking Lyrica. 

“Animal studies have shown that pregabalin, the active ingredient in Lyrica, made male animals less fertile and caused sperm to change. Also, in animal studies, birth defects were seen in the offspring (babies) of male animals treated with pregabalin. It is not known if these problems can happen in people who take Lyrica,” the warning label states.

What Does Your Pain Feel Like?

By Pat Anson, Editor

Does your chronic pain feel like you’ve been hit with a hammer, a bad sunburn that won’t go away, or ants crawling under your skin?

Those are some of the choices patients have in a new campaign launched in Ireland to change the way patients describepain to their physicians.   

Accurately assessing pain is difficult because pain is so subjective. For many years doctors have relied on various versions of the Wong Baker Pain Scale – a series of sad and smiling faces a patient chooses from to help their doctor understand how much pain they are in. The scale is so simple it was originally developed for children, but is now used around the world for adults.

The “Mypainfeelslike…” campaign aims to improve on that method by using more descriptive images and phrases to help doctors understand and diagnose their patient’s pain. The campaign focuses on neuropathic pain, but can be used for many other types of chronic pain. The initiative is sponsored by Grunenthal Group, a German pharmaceutical company.

Instead of an unhappy face, patients can choose from a dozen images, ranging from a burning flame to a rope tied in knots to a set of ice cubes. They also fill out a questionnaire and select different phrases to describe their pain, such as “a hot iron on my skin” or “a volcano erupting.”

Patients are also asked to fill out a questionnaire to select different phrases to describe their pain, such as “a hot iron on my skin” or “a volcano erupting.” And there's a list of multiple choice answers to describe how pain affects their ability to work, exercise and socialize.

It may take a few minutes to complete the questionnaire, but the idea is to get patients to “invest more time and accurateness in thinking about their symptoms, describing them more precisely, and preparing for doctors’ appointments.”

“Doing so forces us to reconsider our chronic pain, and the different ways that we feel it. This improves our self-awareness, allows us to better communicate our situation, and helps us get the most value out of the very short time that we usually have during doctors’ appointments,” the website says.

To take the questionnaire, click here.

According to a survey by Grunenthal, over half of Irish pain sufferers feel frustrated when trying to communicate their pain to a doctor. Over a quarter say they delay discussing their pain because they’re not sure how to do it.

“Living with chronic or nerve pain affects people’s well-being, their ability to be independent, their productivity and relationships, which can lead to feelings of depression," John Lindsay, chair of Chronic Pain Ireland told the Irish Independent.  “The ‘Mypainfeelslike…’ campaign will help raise awareness of the impact of chronic pain and give people living with this disease the tools to re-evaluate their pain management plans.”

Neuropathy More Damaging Than Previously Thought

By Pat Anson, Editor

A tingling, sometimes painful sensation in the hands and feet – the early stages of small fiber neuropathy -- may be more damaging to the peripheral nervous system than previously thought, according to new research published in JAMA Neurology.

A 3-year study by Johns Hopkins neurologists found that patients with small fiber neuropathy showed unexpected deterioration over the entire length of sensory nerve fibers, not just nerve fibers at the surface of the skin.

“I liken small fiber neuropathy to the canary in the coal mine,” says senior author Michael Polydefkis, MD, professor of neurology at the Johns Hopkins University School of Medicine and director of the Cutaneous Nerve Lab. “It signals the beginning of nerve deterioration that with time involves other types of nerve fibers and becomes more apparent and dramatically affects people’s quality of life. The results of this new study add urgency to the need for more screening of those with the condition and faster intervention.”

Nearly 26 million people in the United States have diabetes and about half have some form of neuropathy, according to the American Diabetes Association.  Small fiber neuropathy can also be caused by lupus, HIV, Lyme disease, celiac disease or alcoholism.

Diabetic peripheral neuropathy causes nerves to send out abnormal signals. Patients feel pain or loss of feeling in their toes, feet, legs, hands and arms. It may also include a persistent burning, tingling or prickling sensation. The condition can eventually lead to injuries, chronic foot ulcers and even amputations.

Polydefkis and his colleagues found that small fiber nerve damage occurs even in patients with prediabetes, and the early symptoms of burning pain may be less benign than most clinicians think. Routine nerve tests, like nerve conduction, often fail to identify nerve damage because they mostly assess injury to large diameter nerve fibers.

In an effort to measure nerve damage more accurately, Johns Hopkins researchers took small samples of skin — the size of a large freckle — from 52 patients diagnosed with small fiber neuropathy and from 10 healthy controls. Skin samples were taken from the ankle, the lower thigh near the knee and the upper thigh. Three years later, samples from the same area in the same patients were taken for comparison.

Microscopic analysis of the skin samples showed that patients with small fiber neuropathy initially had fewer nerve fibers on the ankle compared to the upper thigh, demonstrating the most nerve damage was further down the leg. But after three years, researchers found that longer nerve fibers were also lost from the lower and upper thighs, something that was not expected.

“We are all taught in medical school that the longest nerves degrade first, and we show that this isn’t always the case,” says lead author Mohammad Khoshnoodi, MD, assistant professor of neurology at Johns Hopkins,

Patients with prediabetes or diabetes had at least 50 percent fewer small nerve fibers in their ankles initially than those participants with an unknown cause for their small fiber neuropathy, indicating these patients started the study with more damage to their small nerve fibers.

The patients with prediabetes continued to have worsening damage to their small nerve fibers over the course of the study, losing about 10 percent of their nerve fiber density each year at all sites tested along the leg. Patients with diabetes also lost similar rates of nerve fibers along the three sites of the leg.

“I expected that people with diabetes would do worse, but I didn’t really expect people with prediabetes to experience a similar rate of degradation of their small nerve fibers,” says Polydefkis.

Researchers caution that their study was small, and that other factors such as high blood sugar, smoking, high blood pressure and high cholesterol, may also have contributed to the decline in nerve fibers.

CRPS Patients Needed for Clinical Study

By Pat Anson, Editor

About 80,000 Americans each year are diagnosed with Complex Regional Pain Syndrome (CRPS), a poorly understood condition caused by injury or trauma that leads to throbbing and burning pain that never goes away. It often takes years and multiple doctors before a patient is diagnosed with CRPS – and by then the pain has often migrated to other parts of the body and has become chronic.

That’s the dilemma now faced by Axsome Therapeutics (NASDAQ: AXSM), a biopharmaceutical research company that hopes to win FDA approval for an experimental, non-opioid drug that would be the first medication of any kind approved for treating CRPS --- also known as Reflex Sympathetic Dystrophy (RSD).

Axsome is conducting a Phase 3 clinical study of the drug --- called AXS-02 --- in the United States, Canada, the United Kingdom and Australia.

The challenge? Although Axsome only needs about 190 patients for the CREATE-1 study, it’s having trouble finding enough eligible patients. They’re looking for patients who suffered their initial injury in the last year and who were diagnosed with CRPS in the last six months.

“We’re trying to find patients very early in the stages of CRPS,” says Randall Kaye, MD, chief medical officer of Axsome.  

It typically takes a year or more for a patient to get a CRSP diagnosis because its early symptoms are not all that different from acute pain caused by surgery, a broken bone or some other type of trauma. It takes an experienced doctor to recognize the early signs.

“These are patients who continue to have pain that just doesn’t quite follow the routine course. Even after about a week or two, something is different. The pain is too much or the quality of the pain is just different. They describe a burning sensation or there’s exquisite sensitivity to temperature,” says Kaye. “What happens to these patients is that they continue to see a variety of physicians before they’re given that label of CRPS.”

a CRPS PATIENT 6 MONTHS AFTER leg fracture

“I wish it was easy to diagnose Complex Regional Pain Syndrome,” says Barby Ingle, president of the International Pain Foundation (iPain), who was diagnosed with RSD/CRPS two years after a car accident that injured her shoulder. “I went from having RSD in my face and shoulder. It then spread to my right arm and hand, then my entire right side. By the time I was properly diagnosed I had full body including organ involvement.”

“I have personally spoken to thousands of patients who have been diagnosed with RSD/CRPS. Out of all of them, two were diagnosed within the first 3 months, most took over a year. For me, I saw 43 providers before receiving a proper diagnosis. Most pain providers were not educated and although providers are getting better education now, there are still major delays.”

Opioids and other pain medications only dull the pain of CRPS, but Axsome is hoping that AXS-02 can also treat the underlying condition that causes the disorder.

“I hope so,” says Kaye. “Instead of just relieving pain, we’re getting right at the underlying pathophysiology of the condition.”

AXS-02 is an oral formulation of zoledronic acid, an injectable bisphosphonate that inhibits the production of compounds that cause bone pain. Bisphosphonates have long been used to treat osteoporosis and Kaye believes they might also stop the progression of CRPS.

“It’s pretty straightforward. Patients take one tablet once a week for six weeks and they’re done,” Kaye told Pain News Network. “We don’t think there will be a reoccurrence based on the mechanism of action. But we want to be sure.”

Proving that AXS-02 can do more than just relieve symptoms of CRPS will take time. If it can find enough patients, Axsome hopes to finish the CREATE-1 study in mid-2017. Additional studies may then be needed. If the clinical results are positive, the Food and Drug Administration has granted “fast track” and “orphan drug” designation for AXS-02, which will speed up the application and approval process.

CRPS patients interested in applying for the CREATE-1 study should click here.    

Cellphone Towers Amplify Pain in Amputees

By Pat Anson, Editor

For many years there has been a debate about the possible health effects of cell phone towers, power lines and other transmission devices that create electromagnetic fields (EMFs). These magnetic and electromagnetic frequency waves pass right through us, raising concern that they might cause cancer and other adverse health effects.

A new study by researchers at The University of Texas at Dallas suggests that cellphone towers may trigger neuropathic pain, especially in amputees that suffer from phantom limb pain.

"Our study provides evidence, for the first time, that subjects exposed to cellphone towers at low, regular levels can actually perceive pain," said Dr. Mario Romero-Ortega, senior author of the study and an associate professor of bioengineering in the University's Erik Jonsson School of Engineering and Computer Science. "Our study also points to a specific nerve pathway that may contribute to our main finding."

Most of the previous research into the possible health effects of cellphone towers has been conducted on individuals with no diagnosed, pre-existing conditions. This is one of the first studies to look at the effects of EMFs on amputees.

For years, retired Maj. David Underwood noticed that whenever he drove under power lines or near other electromagnetic fields, he would feel a buzz in what remained of his left arm. When traveling by car through Texas' open spaces, the buzz often became more powerful.

"When roaming on a cellphone in the car kicked in, the pain almost felt like having my arm blown off again," said Underwood, an Iraq War veteran who was injured by an improvised explosive device (IED). His injuries resulted in 35 surgeries and the amputation of his left arm.

"I didn't notice the power lines, cellphones on roam or other electromagnetic fields until I first felt them in my arm," says Underwood.

After learning about Underwood’s experiences, Romero-Ortega decided to study the phenomena.

He and his colleagues thought that neuromas -- inflamed peripheral nerve bundles that often form due to injury – could be more sensitive to EMFs. To test their theory in a laboratory, they assigned 20 rats into two groups -- one receiving a nerve injury that simulated amputation, and the other group receiving a sham treatment.

Researchers then exposed the rats to a radiofrequency electromagnetic antenna for 10 minutes, once per week for eight weeks. The antenna delivered a power density similar to what a human would be exposed to 125 feet away from a cellphone tower.

By the fourth week, 88 percent of the rats in the nerve-injured group demonstrated a behavioral pain response, while only one rat in the sham group exhibited pain. After growth of neuroma and resection -- the typical treatment in humans with neuromas who are experiencing pain -- the pain responses persisted.

"Many believe that a neuroma has to be present in order to evoke pain. Our model found that electromagnetic fields evoked pain that is perceived before neuroma formation; subjects felt pain almost immediately," Romero-Ortega said. "My hope is that this study will highlight the importance of developing clinical options to prevent neuromas, instead of the current partially effective surgery alternatives for neuroma resection to treat pain."

Romero-Ortega says since the research produced pain responses in rats similar to those in anecdotal reports from humans such as Major Underwood, the results "are very likely" generalizable to humans.

"There are people who live in caves because they report to be hypersensitive to radiomagnetism, yet the rest of the world uses cellphones and does not have a problem. The polarization may allow people to disregard the complaints of the few as psychosomatic," he said. "In our study, the subjects with nerve injury were not capable of complex psychosomatic behavior. Their pain was a direct response to man-made radiofrequency electromagnetic energy."

At one point in the study, members of the research group showed Underwood video of subjects in the experiment and their response to radiofrequency electromagnetic fields.

"It was exactly the same type of movements I would have around cellphones on roam, power lines and other electromagnetic fields," said Underwood.

Until the study was published online in PLOS ONE, there was no scientific evidence to back up the anecdotal stories of people like Underwood, who reported neuropathic pain around cellphone towers and other technology that produce EMFs. .

Phantom limb pain is a common and painful disorder that many amputees feel after their limbs are removed. The origin of the pain and sensations from the missing limb are not well understood. There are nearly 2 million amputees in the United States, according to the Centers for Disease Control and Prevention.

My Life as a Teen with Chronic Pain

By Stacy Depew Ellis, Guest Columnist

School, sports, music, catching up on the latest gossip. That is what I wish I could say my teenage years were filled with.

Don’t get me wrong, I had a great life. However, I was more concerned with being at school, when my last dose of medicine was, and how I was going to get up the stairs.

When I was in eighth grade, I had a traumatic accident in my dance class. After being misdiagnosed and put in a cast for almost three months, I was diagnosed with a chronic pain syndrome called Reflex Sympathetic Disorder (RSD) or CRPS.

I was sent to yet another doctor to see about treatment. It was decided that I would continue taking pain medication and start receiving lumbar injections. Little did I know that sleepless nights and several emergency room trips would also be included. I would be given more than the recommended amount of painkillers and would still be screaming in pain. Every trip back there offered more questions about a teenager being addicted to prescription drugs. Every doctor in town had seen me.

I started high school as a homebound student. I was going to school for my elective classes and seeing a teacher at my house for core classes. A lot of kids my age got hurt, most of them had a cast at some point. But my illness wasn’t visible; you couldn’t see anything wrong with me. I began losing friends and rumors spread like wildfire throughout my community and school. The worse my pain was, the worse the rumors were. It was tough, but I got through school.

STACY DEPEW ELLIS

After my 33rd spinal injection, I put a stop to the poking and prodding. The doctor hit a nerve and I was paralyzed from my shoulder to my finger tips for two days. Forty-eight hours of not moving an arm. Even more doctors came to see me and I started what would become the first of many steroid treatments.

Time went by and nothing got better. I had headaches, achiness, and started having trouble putting my thoughts into sentences. I saw a neurologist who once again started a smorgasbord of tests. Using my body as a human cushion was normal. What seemed like years of MRIs, spinal taps, and some things I have never heard of, led to the diagnosis of multiple sclerosis.

MS? Really? I was 21 years old.  My first round of treatment was a huge dose of steroids. I took 150 Prednisone pills followed by three days of IV steroids. My flare ups were bad, leaving me in the hospital for weeks at a time. I was a guinea pig for these pharmaceutical companies, injecting myself with a different medicine every month to see which worked best.

It was relieving to finally have a diagnosis and know what was wrong, but having MS is almost worse than not knowing. Heaven forbid I get sick and need to see a doctor. No one wants to treat someone with something like MS. Doctors immediately go to “it’s just the MS” and real problems get overlooked and never fixed. Honestly, the dentist even has trouble being your doctor.

I have been on medicine almost my whole life. I have been seen for depression and spent my paychecks on medical bills. There may never be a cure for multiple sclerosis and I may always be popping pills and injecting things into my stomach, but I am happy to say that I do my hardest to not let my disability hinder me. I try to not let it even be a part of me and I live my life to the fullest.

I will be on anti-anxiety medicine forever but I also believe that I can do anything that I desire. That is something that no doctor can ever take from me.

Stacy Depew Ellis lives in Alabama with her husband. Stacy proudly supports the Alabama-Mississippi National Multiple Sclerosis Society and the Ronald McDonald House Charity, which provided housing for Stacy and her mother when she was in a treatment program in Philadelphia.

Pain News Network invites other readers to share their stories with us.  Send them to:  editor@PainNewsNetwork.org. 

The information in this column should not be considered as professional medical advice, diagnosis or treatment. It is for informational purposes only and represent the author’s opinions alone. It does not inherently express or reflect the views, opinions and/or positions of Pain News Network.

Pfizer’s Quiet Recall of Lyrica Capsules

By Pat Anson, Editor

Pfizer has quietly recalled three lots of its blockbuster drug Lyrica because of a manufacturing problem that could have left some capsules deformed or damaged.  The voluntary recall only involves 50 mg and 75 mg Lyrica capsules with a certain lot number and expiration date.

“Please note that use of, or exposure to, product from these lots is not likely to cause health consequences,” said Lou Dallago, Vice-President of Pfizer’s U.S. Trade Group, in a “Dear Customer” letter sent to retailers who may have received a shipment of the recalled Lyrica lots in September or October 2015.

The letter is dated January 11, 2016 and is stamped “Urgent: Drug Recall.”

Pfizer has not publicized or notified patients directly about the recall. The drug maker has issued no press releases about the recall and there is no mention of it on Pfizer’s Lyrica website or the Food and Drug Administration's website that lists recalled products. 

(An update to this story can be found by clicking here).

“The recall was initiated because some Lyrica capsules in the affected lots may be deformed or damaged,” GoodRx.com reported.  “This can affect the integrity of the medication in those capsules, which means they could lose some of the active ingredient—so you may or may not be getting the full dose with each capsule. If you don’t receive the correct dose, your prescription may not be as effective.”

Lyrica is the brand name of pregabalin, which was originally developed as an anti-seizure medication to treat epilepsy. Lyrica is also approved by the FDA to treat diabetic nerve pain, fibromyalgia, post-herpetic neuralgia caused by shingles and spinal cord injury. Lyrica is prescribed “off label” to treat a variety of other conditions, including lumbar spinal stenosis, the most common type of lower back pain in older adults.

The recalled Lyrica includes 50 mg capsules in 90-count bottles, Lot #M07861 and with an expiration date of 5/31/2018.

Two lots of 75 mg capsules in 90-count bottles are also being recalled. Their lot numbers are #M07862 and #M07865, with expiration dates of 5/31/2018 and 6/30/2018.

Lyrica is Pfizer’s top selling drug, generates over $5 billion in annual sales, and is currently approved for use in over 130 countries. Last year Pfizer agreed to pay $400 million to settle a shareholder lawsuit over allegations it illegally marketed Lyrica and several other drugs off-label. The lawsuit stemmed from a $2.3 billion settlement with the federal government in 2009 for fraudulent marketing and illegal kickbacks paid to doctors who prescribed Lyrica and other Pfizer products.

Vitamin D Lowers Inflammation from MS

By Pat Anson, Editor

A new study is adding to the growing body of evidence that Vitamin D supplements can be used to treat multiple sclerosis (MS) and other inflammatory chronic pain conditions.

The pilot study published by Johns Hopkins physicians in the journal Neurology found that taking a high dose of vitamin D3 is safe for people with MS and may help regulate the body’s hyperactive immune response.

“These results are exciting, as vitamin D has the potential to be an inexpensive, safe and convenient treatment for people with MS,” says study author Peter Calabresi, MD, director of the Johns Hopkins Multiple Sclerosis Center and professor of neurology at the Johns Hopkins University School of Medicine. “More research is needed to confirm these findings with larger groups of people and to help us understand the mechanisms for these effects, but the results are promising.”

MS is a chronic and incurable disease which attacks the body’s central nervous system, causing numbness in the limbs, difficulty walking, paralysis, loss of vision, fatigue and pain.

Low blood levels of vitamin D – known as the “sunshine vitamin”-- have been linked to an increased risk of developing MS.

People who have MS and low levels of vitamin D are also more likely to have greater disability and more disease activity.

In the Johns Hopkins study, 40 people with relapsing-remitting MS received either 10,400 international units or 800 international units (IU) of vitamin D3 supplements every day for six months. Patients with severe vitamin D deficiency were not included in the study. The current recommended daily allowance of vitamin D3 is 600 IU.

Blood tests at the start of the study, and after three and six months, measured the amount of vitamin D in the blood and the response in the immune system’s T cells, which play a key role in MS.

Participants taking the high dose of vitamin D reached optimal levels of Vitamin D in the blood (40 to 60 ng/ml), while the group taking the low dose did not reach that target. The people taking the high dose also had a reduction in the percentage of inflammatory T cells related to MS severity. The people taking the low dose did not have any noticeable changes in the percentages of their T cell subsets.

“We hope that these changes in inflammatory T cell responses translate to a reduced severity of disease,” says Calabresi. “Other clinical trials are underway to determine if that is the case.”

Another recent study in Neurology by Danish researchers found that MS patients who spent time in the sun every day during the summer as teenagers developed the disease later in life than those who spent their summers indoors. Ultraviolet rays in sunlight are a principal source of Vitamin D, which has a wide range of positive health effects, such as strengthening bones and inhibiting the growth of some cancers.

Low levels of serum vitamin D have also been linked to fibromyalgia. In a study of over 1,800 fibromyalgia patients published in the journal Pain Physician, researchers at National Taiwan University Hospital found a “positive crude association” between chronic widespread pain and hypovitaminosis D, which is caused by poor nutritional intake of Vitamin D, inadequate sunlight or conditions that limit Vitamin D absorption.

Pain News Network columnist Crystal Lindell began taking Vitamin D supplements when her blood levels were found to be very low. Within a few months she was feeling better, exercising more, and losing weight. You can read Crystal’s story by clicking here.

Lyrica Fails in Nerve Pain Study

By Pat Anson, Editor

Lyrica was originally marketed as an anti-seizure medication for epilepsy, although that’s never stopped Pfizer from looking for new ways to have doctors prescribe its blockbuster drug -- for everything from anxiety to shingles to fibromyalgia.

But efforts to get Lyrica approved as a treatment for post-traumatic nerve pain appear to have reached a dead end. Pfizer says a Phase III clinical study found that pregabalin – the generic name for Lyrica – worked no better than a placebo in controlling chronic nerve pain caused by traumatic accidents or surgery.

“The study did not meet its primary efficacy endpoint,” Pfizer said in a brief statement about its 15-week, double-blind, placebo-controlled study

There is no treatment currently approved by the Food and Drug Administration for post-traumatic neuropathic pain.

Lyrica is currently approved for use in over 130 countries. The FDA has approved Lyrica to treat chronic nerve pain caused by diabetes, fibromyalgia, epilepsy, spinal cord injury and post-herpetic neuralgia caused by shingles. The drug is also prescribed “off label” to treat a variety of other conditions, including lumbar spinal stenosis, the most common type of lower back pain in older adults.

According to ClinicalTrials.gov, dozens of new studies are underway to test the effectiveness of pregabalin on conditions such as muscle cramps, coughs, irritable bowel syndrome, scoliosis, addiction, and phantom limb pain.

Lyrica is Pfizer’s top selling drug with annual worldwide sales of over $5 billion. Earlier this year, the company agreed to pay $400 million to settle a shareholder lawsuit over allegations it marketed Lyrica and several other drugs off-label. The lawsuit stemmed from a $2.3 billion settlement with the federal government in 2009 for fraudulent marketing and illegal kickbacks paid to doctors who prescribed Lyrica and other Pfizer products.

Common side effects of Lyrica are dizziness, blurred vision, nausea, headache, weight gain and fatigue. Pfizer says Lyrica may also cause suicidal thoughts in about 1 in 500 patients who use it. The company also advises patients not stop taking Lyrica without talking to their doctor. Suddenly stopping the medication may result in withdrawal symptoms such as headaches, nausea, diarrhea, trouble sleeping, increased sweating, and anxiety.

Pfizer Expands Financial Aid to Patients

Pfizer recently announced it was expanding its financial assistance to patients by doubling the allowable income level for people to receive medications without a copayment.

Under Pfizer's RxPathways program, the company will cover copayments for Lyrica and 43 other medicines for both uninsured and underinsured patients earning up to four times the federal poverty level. The new limits are $47,080 annually for a single person and $97,000 for a family of four.

The RxPathways program helped about 350,000 patients last year, and Pfizer expects more this year because of the soaring cost of many drugs.

For more information about financial aid and discounts offered by other drugmakers, see our Patient Resources section.
 

‘Chili Pepper’ Patch Works Better Than Lyrica

By Pat Anson, Editor

A skin patch containing a synthetic substance found in chili peppers works better than pregabalin in treating patients with neuropathic pain, according to the results of a new study conducted in Europe.

Pregabalin is the generic name for Lyrica, a medication made by Pfizer that is widely prescribed for neuropathy, fibromyalgia and other chronic pain conditions.

Nearly 660 adults with moderate to serve peripheral neuropathic pain (PPN) caused by shingles were randomly assigned to groups receiving either a single treatment with the Qutenza patch or a daily dose of pregabalin.

The 8% capsaicin patch uses a synthetic form of capsaicin, the substance that gives chili peppers their heat, to dull pain-sensing nerves in the skin.

By the 8th week of the study, a little over half of the patients in both groups had achieved pain relief of at least 30 percent. However, the median time to pain relief in the capsaicin group was 7.5 days, compared to 36 days in the pregabalin group. Those who used the Qutenza patch were also more satisfied with their treatment and had fewer side effects.

The study, which is published in the European Journal of Pain, was funded by Astellas Pharma Europe Ltd., which makes the Qutenza patch.

"This is an important and well-conducted study that was designed to mimic everyday practice, allowing those patients randomised to the pregabalin arm to be individually titrated to the optimal tolerated dose,” said lead investigator Maija Haanpää, a professor in the Department of Neurosurgery at Helsinki University in Finland. “We found that topical treatment with the capsaicin 8% patch was non-inferior to the current standard of care. This means that there is now another treatment option for people with peripheral neuropathic pain, especially those patients who are very sensitive to the side effects of systemic medication or for those who do not wish to take tablets every day."

Until now, no head-to-head clinical trials have directly compared the capsaicin patch to pregabalin or other treatments for PNP.

"There is a need to tailor treatment to individual patients and these data show that the capsaicin 8% patch is an efficacious agent to manage patients with peripheral neuropathic pain," said Dr. Andreas Karas, Senior Director, Medical Affairs for Astellas Pharma.

In September of this year, the European Commission approved a label extension for Qutenza to include diabetic patients with neuropathic pain. In the United States, Qutenza has only been approved by the FDA for the management of neuropathic pain associated with postherpetic neuralgia.

Neuropathic pain is characterized by tingling pain that develops as a result of nerve damage caused by conditions such as shingles, diabetes, amputation, inflammation, and cancer. About 8% of adults worldwide suffer from neuropathy. Many drugs used to treat neuropathic pain, such as Neurontin and Lyrica, often don’t work or have unpleasant side effects. Common side effects of Lyrica are dizziness, nausea, headache, weight gain and fatigue.

In addition to neuropathic pain, Lyrica is approved by the FDA to treat chronic pain associated with fibromyalgia, epilepsy, shingles, diabetic peripheral neuropathy, and spinal cord injury. The drug is also prescribed “off label” to treat lumbar spinal stenosis, the most common type of lower back pain in older adults.

Lyrica is Pfizer’s top selling drug with annual worldwide sales of over $5 billion.

Are Opioids or Economics Killing White Americans?

By Pat Anson, Editor

Opinions are all over the map about a recent study by two Princeton University researchers, who estimate that nearly half a million white Americans died in the last 15 years due to a quiet epidemic of pain, suicide, alcohol abuse and opioid overdoses.

The husband and wife research team of Angus Deaton and Anne Case were careful not to point a finger at any one cause, but speculated that financial stress caused by unemployment and stagnant incomes may be behind the rising mortality of middle-aged whites. The deaths were concentrated in baby boomers with a high school education or less.

But some were quick to blame the “opioid epidemic.”

“An opioid overdose epidemic is at the heart of this rise in white middle-age mortality,” wrote psychiatrist Richard Friedman, MD, in an editorial that appeared in the New York Times under the headline “How Doctors Helped Drive the Addiction Crisis.”

“Driving this opioid epidemic, in large part, is a disturbing change in the attitude within the medical profession about the use of these drugs to treat pain,” said Friedman. “It is physicians who, in large part, unleashed the current opioid epidemic with their promiscuous use of these drugs; we have a large responsibility to end it.”

And what should doctors do to end the epidemic?

Friedman said there was “strong evidence” that Motrin, Tylenol and other nonsteroidal anti-inflammatory drugs (NSAIDS) were “safer and more effective for many painful conditions than opioid painkillers.”

The Fresno Bee took a more nuanced view of what it called “the epidemic of pain and heartbreak.”

“If ever a set of numbers cried out for deeper examination, it is this one. Human frailty may be epidemic, but surely it is also no surprise that a generation raised with the expectation of a secure future might sink into depression, hostility, illness, anguish and rage when that future fails to transpire,” The Bee said in an editorial. “Whether the solution is better jobs, cheaper schools, more mental health care or less reliance on painkillers, the distress of America’s white working class has become a public health crisis.”

“White Americans who used to be able to support a family are now struggling even in dual income households, and there's a corresponding loss in stature and self-esteem. They are turning to prescription opioids in greater numbers than minorities,” said the Baltimore Sun. “The transition to a 21st (century) economy is literally killing some people, and the United States can ill afford to ignore this disturbing development.”

Overseas news outlets also tended to blame the rising death rate on a “ruthless economy.”

“These people are dying because history has unexpectedly thrown them on the scrapheap,” said The Guardian. “White baby boomers had high expectations of the future, yet many of them have lived to discover that they will be worse off than their parents.”

“(The) findings should awaken Americans to the price we pay for pursuing economic policies that enrich the few at the expense of the many,” said David Cay Johnston in a column for Al Jezeera America. “The harsh reality is that our economy is in many ways stuck in 1998 and that for poorly educated Americans, the economy has become a living nightmare with no expectation of a brighter tomorrow. The rise in drug and alcohol poisonings as well as the rising tide of suicides should not surprise. But these trends should disturb.”

What do you think? Is the economy to blame for the increasing number of deaths? Or is it opioids?

Power of Pain: NERVEmber

By Barby Ingle, Columnist  

In a few short days Nerve Pain Awareness month begins – a global movement known in the pain community as NERVEmber.

I began the NERVEmber project in 2009 as a way to bring more attention to chronic nerve pain conditions such as Reflex Sympathetic Dystrophy (RSD/CRPS) and diabetic neuropathy. The term NERVEmber is derived from the burning pain people with neuropathy feel, combined with the month of November. 

The Power of Pain Foundation hosts the official NERVEmber project events each year. Since its inception, tens of thousands of nerve pain patients and organizations have signed on to help promote NERVEmber and bring awareness to the 150 plus conditions that have nerve pain as a symptom.  

The color orange is the international color for chronic pain awareness, which also fits right in with the fall colors we typically see.

Our largest spotlight throughout the month shines on RSD, which is one of the most painful conditions known to mankind. Yet, like many chronic pain conditions, RSD is misunderstood, mistreated and often misdiagnosed. 

Each day during the month of NERVEmber the Power of Pain Foundation will present an awareness task that we can all participate in. This year we are also giving away over $1,000 in prizes -- available to anyone who registers to participate and uses special hashtags on social media, completes daily tasks, and hosts or attends an event. The more you participate in official NERVEmber events, the more chances you have to win!

You can bring more awareness to conditions like RSD, CRPS and diabetes by posting every day in NERVEmber using social media tags on your posts such as @powerofpain and #PaintTheWorldOrange. Using these tags will earn participants chances to win some great prizes.

The Power of Pain Foundation and the #NERVEmber project is also supporting the #CRPSdayofaction, #RSDdayofaction, @theproject3x5’s, #OrangeInitiative,  #ColorTheWorldOrange, and #ColourTheWorldOrange. 

Official events include tasks shared on social media, wearing t-shirts, Paint the World Orange, and educational series.

The daily calendar of events are available here on the NERVEmber webpage.

One of our newest additions to the project is #painPOP. We are asking people to get involved by popping a balloon and challenging others to do the same or make a donation to help the Power of Pain Foundation continue our education, awareness and access to care programs.

We are asking participants to text, post or say something similar to, “I have the NERVE to be HEARD!"

We will also be posting educational videos on YouTube and our website. Watching videos and commenting on them gives participants more ways to win great prizes. For #PaintTheWorldOrange, we ask participants to post their #NERVEmber pictures on social media and to share your pics as you #PaintTheWorldOrange. Be sure to hashtag it #NERVEmber #PaintTheWorldOrange to increase awareness and your chances to win POP prizes.

Participants are also invited to create graphics of their own using #NERVEmber and #PaintTheWorldOrange. Don’t forget to WEAR ORANGE all month long! You can upload your orange photos to help us paint the world.

Tens of thousands have participated in past years from around the world and we are expecting even more this year. Don’t miss out on being part of a movement to make a difference.

For more information on NERVEmber visit http://powerofpain.org/nervember

Barby Ingle suffers from Reflex Sympathetic Dystrophy (RSD) and endometriosis. Barby is a chronic pain educator, patient advocate, and president of the Power of Pain Foundation. She is also a motivational speaker and best-selling author on pain topics.

More information about Barby can be found at her website.

The information in this column should not be considered as professional medical advice, diagnosis or treatment. It is for informational purposes only and represents the author’s opinions alone. It does not inherently express or reflect the views, opinions and/or positions of Pain News Network.

Sunlight May Delay Onset of Multiple Sclerosis

By Pat Anson, Editor

Exposure to sunlight may elevate your risk of sunburn, skin cancer and other health problems, but it appears to have a beneficial effect in delaying the onset of multiple sclerosis (MS).

Danish researchers found that MS patients who spent time in the sun every day during the summer as teenagers developed the disease later in life than those who spent their summers indoors. Their study, which was published in the online issue of Neurology, also found that people who were overweight at age 20 developed MS earlier.

"The factors that lead to developing MS are complex and we are still working to understand them all, but several studies have shown that vitamin D and sun exposure may have a protective effect on developing the disease," said study author Julie Hejgaard Laursen, MD, of Copenhagen University Hospital in Denmark. "This study suggests that sun exposure during the teenage years may even affect the age at onset of the disease."

MS is a chronic and incurable disease which attacks the body’s central nervous system, causing numbness in the limbs, difficulty walking, paralysis, loss of vision, fatigue and pain.

Ultraviolet rays (UVB) in sunlight are a principal source of Vitamin D, which has a wide range of positive health effects, such as strengthening bones and inhibiting the growth of some cancers.

In the Danish study, over 1,100 people with MS filled out questionnaires and gave blood samples. They were put into two groups based on their sun habits during their teenage years: those who spent time in the sun every day and those who did not. They were also asked about their use of vitamin D supplements during their teenage years and how much fatty fish they ate at age 20.

The people who spent time in the sun every day had an average onset of MS that was nearly two years later than those who did not spend time in the sun. On average, they developed MS at age 33, compared to 31 for those who were not in the sun every day.

"It appears that both UVB rays from sunlight and vitamin D could be associated with a delayed onset of MS," Laursen said. "However, it's possible that other outdoor factors play a role, and these still have to be identified."

Those who were overweight at age 20 developed MS about 1.6 years earlier than those of average weight and 3.1 years earlier than those who were underweight.

Previous studies have shown a relationship between MS and childhood obesity. Obese people are also known to have lower blood levels of vitamin D.

"The relationship between weight and MS might be explained by a vitamin D deficiency, but there's not enough direct evidence to establish this yet," Laursen said.

"A limitation of the study is the risk of recall bias because participants were asked to remember their sun, eating and supplement habits from years before," Laursen said. "In particular, someone with a long history of MS and onset of the disease at an early age, may wrongly recall a poor sun exposure. Additionally, only Danish patients were included into the study, so there should be caution when extending the results to different ethnic groups living in different geographic locations."

New Wearable Devices for Chronic Pain

By Pat Anson, Editor

With opioid pain medications becoming harder to get and many patients looking for safer alternatives with fewer side effects, a growing number of companies are offering wearable “electrotherapy” devices for pain relief.

There’s the Cefaly headband for migraines, ActiPatch for sore muscles, AcuKnee for osteoarthritis, and the Quell nerve stimulator, which is designed to treat a range of chronic pain conditions. All are part of a fast growing $2.8 billion market for wearable medical devices.

“There’s a big problem brewing on the horizon. And that is the pain medications are being removed from the market, slowly but surely,” says Phillip Muccio, President and founder of Axiobionics, which has been making customized electrotherapy devices for 20 years.

“Electrical stimulation has a way of reaching into the body and interacting and coordinating what happens to the body. That’s why it a fascinating area of medicine because not a lot of things will do that, especially non-invasively and non-pharmacologically.”

Most of the new devices use a form of electrical stimulation to block or mask pain signals – a technique developed decades ago known as Transcutaneous Electric Nerve Stimulation (TENS).

Unlike the old TENS units, which are typically used for about 30 minutes, wearable devices are designed to be worn for several hours at a time or even while sleeping.

image courtesy of axiobionics

“TENS is like a short acting opioid. It’s basically only effective when it’s on,” said Shai Gozani, MD, President and CEO of Neurometrix. “If you’re going to deal with chronic pain, you have to have a wearable, chronically usable device, because pain can be two hours a day or it could be 24 hours a day. TENS devices historically haven’t been designed at all for wear-ability or continuous use.”

Neurometrix recently introduced Quell, an electrotherapy device that Gozani compares to a spinal cord stimulator. But instead of being surgically implanted near the spine like a stimulator, Quell is worn externally on the upper calf below the knee.

image courtesy of neurometrix

“We really look at spinal cord stimulation as the model. We’re trying to make that available but in a non-invasive, wearable way -- versus TENS devices which are really intended for local muscle stimulation. We don’t stimulate the muscles, we stimulate the nerve alone,” Gozani told Pain News Network.

“The upper calf has a lot of nerves. It’s comfortable. It’s discrete. So it meets the requirement to have a large segment of nerves to stimulate, but it’s also highly usable from a wear-ability perspective.”

A small study recently conducted by Neurometrix found that over 80% of Quell users had a significant reduction in pain and two-thirds were able to reduce the amount of pain medication they were taking.  Participants in the study had several different types of of chronic pain, including fibromyalgia, sciatica, neuropathy and arthritis.

When it comes to clinical studies, medical device makers have a clear advantage over pharmaceutical companies, which often have to spend years and tens of millions of dollars proving the safety and effectiveness of their drugs before they’re approved by the Food and Drug Administration. Device makers are held to a lower regulatory standard.

“Devices are approved by FDA basically for safety and not necessarily for efficacy. It’s a lot easier to demonstrate that with a device than if you have to demonstrate a new drug. You basically run one study or two and show that nobody got electrocuted by a TENS unit and you’re good to go,” said Bob Twillman, PhD, Executive Director of the American Academy of Pain Management.

Device makers can even get fast track approval from the FDA without any clinical studies -- if they say a new device is substantially equivalent to an older device already on the market.  Quell, for example, was given clearance by the FDA because of its similarity to Sensus, another Neurometrix device that's worn below the knee for pain relief.

A significant disadvantage for device makers is that most are not covered by public or private health insurers – meaning patients have to pay for them out of pocket. Three years ago, Medicare stopped covering TENS for low back pain, saying the technology was “not reasonable and necessary.”

The lack of reimbursement also makes many doctors unwilling to prescribe wearable devices and unfamiliar with the technology behind them, which stifles innovation.  For that reason, Neurometrix took an unconventional path and made Quell available without a prescription – bypassing insurers and doctors so it could market directly to consumers for $249 a unit.

“We thought it was imperative to get it over the counter. We wanted to make sure it was accessible to patients," said Gozani. "Wear-ability changes everything. Wear-ability is the game changer in terms of optimizing pain relief. I think it's huge."

Smoking Accelerates Multiple Sclerosis

By Pat Anson, Editor

Smoking is never a good idea for anyone – especially people in chronic pain -- but according to a new study it is particularly bad for multiple sclerosis patients, both before and after diagnosis.

Cigarette smoking is already a known risk factor for developing multiple sclerosis (MS), but in a first of its kind study published in JAMA Neurology, Swedish researchers found that continuing to smoke after diagnosis significantly accelerates progression of the disease.

MS is a chronic and incurable disease which attacks the body’s central nervous system, causing numbness in the limbs, difficulty walking, paralysis, loss of vision, fatigue and pain. Symptoms begin with a series of irregular relapses, and after about 20 years MS worsens into a secondary progressive (SP) stage of the disease.

In a study of over 700 MS patients who continued to smoke after their diagnosis, researchers found that each additional year of smoking accelerated the time to SP conversion by 4.7 percent.  

Looking at it another way, the study found that patients who continued to smoke converted to SP faster (at an average age of 48) than those who quit smoking (at age 56).

“This study demonstrates that smoking after MS diagnosis has a negative impact on the progression of the disease, whereas reduced smoking may improve patient quality of life, with more years before the development of SP disease,” said lead author Jan Hillert, MD, Department of Clinical Neuroscience, Karolinska University Hospital Solna in Stockholm.

“Evidence clearly supports advising patients with MS who smoke to quit. Health care services for patients with MS should be organized to support such a lifestyle change.”

Getting MS patients to quit is important not only for patients, but for society as a whole because of the high cost of treating MS. Disease modifying drugs such as fingolimod and natalizumab, cost about $30,000 per year and are not always effective.

“This study adds to the important research demonstrating that smoking is an important modifiable risk factor in MS. Most importantly, it provides the first evidence, to our knowledge, that quitting smoking appears to delay onset of secondary progressive MS and provide protective benefit,”  said Myla Goldman, MD, of the University of Virginia, and Olaf Stüve, MD, of the University of Texas Southwestern Medical Center in an accompanying editorial in JAMA Neurology.

Previous studies have found that smoking increases your chances of having several types of chronic pain conditions.

A study of over 6,000 Kentucky women found that those who smoked had a greater chance of having fibromyalgia, sciatica, chronic neck pain, chronic back pain and joint pain than non-smokers. Women in the study who smoked daily more than doubled their odds of having chronic pain.

A large study in Norway found that smokers and former smokers were more sensitive to pain than non-smokers. Smokers had the lowest tolerance to pain, while men and women who had never smoked had the highest pain tolerance.