Yunis and Masi criteria for juvenile primary fibromyalgia

The diagnosis for juvenile primary fibromyalgia is based upon all 4 major criteria plus 3 of the 10 minor criteria

Major criteria

1. Generalized musculoskeletal aching at ≥3 sites for at least 3 months

2. Absence of an underlying condition or cause (eg, arthritis or trauma)

3. Normal test results

4. Five tender points

Minor criteria

1. Chronic anxiety or tension

2. Fatigue

3. Poor sleep

4. Chronic headaches

5. Irritable bowel syndrome

6. Subjective soft tissue swelling

7. Numbness

8. Pain modulation of physical activity

9. Pain modulation by weather factors

10. Pain modulation by anxiety and/or stress

Modified from: Yunis MB, Masi AT. Juvenile primary fibromyalgia syndrome. A clinical study of thirty-three patients and matched normal controls. Arthritis Rheum 1985; 28:138.

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Yunis and Masi criteria for juvenile primary fibromyalgia