In Hashimoto’s thyroiditis, quoted FM rate is 30-40% ; present study found 62%. Thyroid antibodies, abdominal girth, and duration disease among other things, contribute to FM possibility.
Clin Rheumatol. 2017 Jul;36(7):1617-1621. doi: 10.1007/s10067-017-3556-2.
Fibromyalgia in patients with thyroid autoimmunity: prevalence and relationship with disease activity.
Haliloglu S et al
- 79 cases Hashimoto’s thyroiditis (HT)
- Hasimoto’s also called chronic lymphocytic thyroiditis
- Other thyroid disease is Grave’s disease
- about 10% women and 1% men have Hashimoto’s
- “diagnosis of HT was made based on the presence of positive antithyroid peroxidase antibody (TPOAb) and antithyroglobulin antibody (TgAb) titres and the typical ultrasonography findings”
- Prevalence Fibromyalgia was 62%
Correlated with Fibromylagia:
- Older age
- longer duration of thyroiditis
- thyroid lab abnormalities – TSH and thyroid antibody levels
- Obesity – higher BMI and wider abdominal girth
- lower height
- lower education level ( maybe sign of illness) but not income level
- married status
Comment – This fits with my concept that Fibromyalgia is an autoimmune disease. Small fiber neuropathy seen in 40+% is a feature of that. Recently, 10+% were found to have MRI evidence of frank active spondyloarthitis another autoimmune type.
\What is interesting is that patients on thyroid replacement often end up with bacterial overgrowth:
Bacterial Overgrowth and Irritable Bowel Syndrome (IBS) – What is the Hypothyroid/Levothyroxine Connection?
I check for thyroid antibodies in FM subjects and now it seems even more important.