My daughter (28 years old) has been having DAILY headaches for about 2 1/2 years. She has had every conceivable test (X-Ray, MRI, Etc) to no avail. She has tried numerous medications from Neurologists and most of them caused REBOUND headaches. Recently she had 2 Occipital nerve shots to her neck from a Pain Management doctor. No help. For the last 6 months she has been taking Excedrin (2-4 a day) which gives her a few hours relief which now has been destroying her stomach ( she's only about 100 lbs. or less). Any suggestions?