By Dr. Forest Tennant

A major finding in our studies of adhesive arachnoiditis (AA) is that most AA patients also have hypermobile Ehlers-Danlos syndrome (hEDS) or a related disorder now called hypermobile spectrum disorder (HSD).

AA is a chronic inflammatory condition that causes nerves in the spinal canal to form adhesions that “glue” them together, while hEDS and HSD cause deficiencies in collagen and the immune system.

How are these conditions connected?

Normal collagen is in thick strands that hold connective tissues together and helps resist infections, tearing, and autoimmune degeneration. When collagen is deficient, the strands may be thin, broken, shortened or non-existent. This allows viruses and bacteria to invade, infiltrating tissues and causing more infections than in individuals with healthy immune systems.

Spinal tissue normally contains considerable amounts of collagen, but in patients with hEDS or HSD they are weak and susceptible to deterioration, inflammation, adhesions and scarring. These spinal tissues include intervertebral discs, vertebrae, spinal canal cover (dura and arachnoid layers), ligaments, and cauda equina nerves.

Weaknesses in spinal tissue make persons with hEDS and HSD more susceptible to AA. It’s also not uncommon for them to develop one or more of these conditions before AA:   

• Tavlov cyst

• Spinal fluid leaks

• Chiari

• Tethered spinal cord

• Herniated disc

• Back pain

• Neck pain

• Spinal arthritis

We have found that persons with hEDS and HSD are also susceptible to Lyme disease, cytomegalovirus, herpes 6 virus, and especially the Epstein-Barr virus (EBV). Almost everyone has EBV, which is typically dormant, but the virus may reactivate from its parasitic life in throat membranes or lymphocytes to infiltrate the brain and spinal tissues.

Persons with hEDS or HSD who have back or neck pain for over 90 days should be screened with the new EBV 4 panel test and take measures to hopefully prevent AA. We highly recommended that they take collagen supplements.

In our studies of patients with MRI-documented AA, essentially 100% have EBV autoimmunity and about 70% show EBV reactivation. About half of those that we review do not know they have hEDS or HSD.

For more details on the link between AA, hEDS and HSD, our new book "The Ehlers-Danlos / Arachnoiditis Connection" is recommended.

Forest Tennant, MD, DrPH, is retired from clinical practice but continues his research on the treatment of intractable pain and arachnoiditis.

Readers interested in learning more about this research should visit the Tennant Foundation’s website, Arachnoiditis Hope. You can also subscribe to its bulletins here.  

The Tennant Foundation gives financial support to Pain News Network and sponsors PNN’s Patient Resources section.