The doctors actually have me taking the topiramate for visual auras which have increased in frequency, plus are now coming in clusters of 3 or 4 instead of singularly, with mild headaches that hang on and on. It used to occur 6-18 months apart, but now occur only a few weeks apart. For years I didn't get headaches at all or very rarely that would last only a day or so. Flashing/blinking lights have always been a real problem for me, so holidays like Christmas and the 4th of July are troublesome --although I love them! Sometimes, I even have to wear dark glasses at night due to the lights. The doctors seem to think all this is migraine related, although regular migraine meds didn't seem to do anything for it. So, who know????