Which of the following is a unique characteristic feature of fibromyalgia?

• A. Progressive muscle weakness
• B. Elevated white blood cell count
• C. Widespread musculoskeletal pain and tenderness at specific points
• D. Joint deformities

Answer: (C)

Verified step by step guidance

1. Understand that fibromyalgia is a chronic condition characterized primarily by widespread musculoskeletal pain and tenderness at specific points on the body, often called tender points.
2. Recognize that progressive muscle weakness is not a typical feature of fibromyalgia; it is more commonly associated with neuromuscular disorders.
3. Note that an elevated white blood cell count usually indicates infection or inflammation, which is not a hallmark of fibromyalgia.
4. Identify that joint deformities are characteristic of conditions like rheumatoid arthritis, not fibromyalgia.
5. Conclude that the unique characteristic feature of fibromyalgia among the options given is widespread musculoskeletal pain and tenderness at specific points.