My daughter has had many test done to rule out the possibility of other diseases. She does have thyroid problems ( which she takes meds for ) and had physical therapy for 5 months without showing any improvement. Her dr didn't realize it was fibromyalgia at the time of therapy. He put her on Cymbalta and her headaches became more severe. The ER doctor recently took some tests to make sure there were no tumors and told her the pain was muscle related. She has some stress in her life right now and I wondered if this could affect the intensity of the headaches.