"Doctor, I've tried everything for my headache and nothing has helped. I've had skull x-rays, EEG's, brain scans and CAT scans. I've been to two neurologists, and to a neurosurgeon. I've had my eyes tested and glasses checked. I've been to a dentist to check my teeth and an EENT specialist to have my sinuses examined. Nobody has found a thing wrong with me. I keep getting these excruciating headaches.