Diagnosis of fibromyalgia, involves at least 3 months of widespread pain, and
pain and tenderness in at least 11 of 18 areas (arms, buttocks, chest, knees, lower back,
neck, rib cage, shoulders, thighs, etc). If the only symptom is headache, further evaluation may need to be done. It is best that you check with your doctor for proper evaluation. imaging studies may also be done. Take care and do keep us posted.