2011 Distinguishing fibromyalgia from rheumatoid arthritis and systemic lupus in clinical questionnaires

Description: Conclusions A combination of 2 questions ("tenderness to touch" and "difficulty sitting for 45 minutes") plus pain in the lower back, neck, hands and arms, may be useful in the construction of clinical questionnaires aimed at patients with musculoskeletal pain. This combination provided a correct diagnosis in 97% of subjects, with only 7 of 253 subjects misclassified.
Distinguishing fibromyalgia from rheumatoid arthritis and systemic lupus in clinical questionnaires: an analysis of the revised fibromyalgia impact questionnaire (FIQR) and its variant the symptom impact questionnaire (SIQR) along with pain locations Ronald Friend and Robert M Bennett Arthritis Research & Therapy 2011, 13:R58