Temporomandibular joint disorder (TMJ) causes jaw pain, and it's more common in people with fibromyalgia (FMS) and chronic fatigue syndrome (CFS or ME/CFS) than it is in the general population.

TMJ can cause several symptoms that aren't typically part of FMS or ME/CFS, including:

• Jaw pain
• Difficulty chewing
• Painful clicking in the jaw
• Locking jaw

Read more / les mer: Fibromyalgia, Chronic Fatigue Syndrome and TMJ