Which systemic condition may contribute to TMD symptoms?

• A. Osteoarthritis
• B. Rheumatoid arthritis
• C. Gout
• D. Fibromyalgia

Answer: (B)

Systemic inflammatory diseases that affect the joints can involve the temporomandibular joint and produce TMD-like symptoms. Rheumatoid arthritis is a classic example: it is a systemic autoimmune inflammatory arthritis that frequently involves the TMJ, causing inflammatory synovitis, pain, swelling, limited mouth opening, and sometimes joint damage such as erosions. Because the TMJ symptoms arise from an underlying systemic process, addressing the RA itself is key to reducing TMJ symptoms and preventing progression.

Osteoarthritis can involve the TMJ as a degenerative process, but that is not a systemic inflammatory condition driving widespread joint inflammation. Gout involving the TMJ is relatively rare. Fibromyalgia can present with widespread muscle and joint pain, including jaw discomfort, but it does not primarily involve inflammatory joint disease of the TMJ itself.