By Pat Anson, PNN Editor

A little-known therapy for Complex Regional Pain Syndrome (CRPS) and other painful neuropathic conditions is finally getting some attention from a prominent medical journal.

“Scrambler therapy is the most exciting development I have seen in years — it’s effective, it’s noninvasive, it reduces opioid use substantially and it can be permanent,´ says Thomas Smith, MD, a professor of oncology at the Johns Hopkins University School of Medicine and co-author of a review recently published in The New England Journal of Medicine.

Scrambler therapy – also known as Calmare pain therapy -- sends mild electric signals through the skin via electrodes placed near areas where chronic nerve pain is felt. Similar to transcutaneous electrical nerve stimulation (TENS), the idea is to “scramble” pain signals being sent to the brain and reduce central sensitization.

Some patients get immediate relief after a 30-minute scrambler session, but most will have to undergo a series of treatments on successive days to have a prolonged analgesic effect. Smith says many patients “get really substantial relief.”

“The duration of relief usually increases with each day of treatment, and in contrast to TENS, analgesic effects have been reported to last for weeks, months, or even years after a treatment course,” wrote Smith, who reviewed 381 clinical trials of TENS and scrambler therapy with his co-author.

“The major limitation with respect to our understanding of electroanalgesia is the small number of well-designed, large, randomized, sham-controlled clinical trials of TENS and scrambler therapy.”

In one small study, patients getting scrambler therapy had a 91% reduction in pain and reduced their use of opioids and other pain relievers by 75 percent.

“If you can block the ascending pain impulses and enhance the inhibitory system, you can potentially reset the brain so it doesn’t feel chronic pain nearly as badly,” Smith says. “It’s like pressing Control-Alt-Delete about a billion times.”

Scrambler therapy seems to be most effective in patients with CRPS or those who develop neuropathic pain after chemotherapy. It’s also been used to treat fibromyalgia, shingles, diabetic neuropathy and post-operative pain.

Amanda Greening was bedridden by CRPS at the young age of 20, but was able to walk again after several sessions of scrambler therapy. Amanda’s father wrote a column for PNN on her recovery. So did a local TV station:

Although scrambler therapy was approved by the FDA in 2009 for patients with chronic or neuropathic pain, the procedure is still not widely available or covered by insurance. Only one company makes the scrambler device, which costs about $65,000, and practitioners have to undergo several days of training to use it. Treatments cost about $300 per session.

Like other pain treatments, scrambler therapy doesn’t work for everyone. About 10 to 20% of  patients have no analgesic response -- a risk many would be willing to take, if it means freeing themselves from a lifetime of pain.