Lately I've been having visual migraines. Sometimes they are a prelude to the pain, other times it's just the visual symptom (called a scintillating scotoma.) My Imitrex doesn't seem to do anything for them. They are getting more frequent, about once a month, instead of once or twice a year. I was surfing around Google and found an illustration of one. Mine looks like the one on the bottom of the picture, except mine starts at the 12 o'clock position and curves around like a backwards "C" to the 4 o'clock position, it sort of undulates the way heat waves come off a pavement in the summertime. I had another one last night. They are so bright and sparkly that it makes looking at anything else difficult. I've talked to my doctor and eye doctor, and they both say that it isn't anything to worry about. Does anyone else have these??? It still kind of freaks me out when I have one!