I started getting what the doc classified as 'micro migraines' in high school, which was 'I really have no fucking clue but we ruled everything else out' talk, really. Battery of tests and all that jazz, with cat scans, MRIs, heart monitors among other things, and that was the tentative prognosis.
It's this whole thing where, for about half a second...my vision would temporarily go dark, along with a moderately painful thrum inside my skull.
Whatever, I've learned to deal with the occasional problem (it was only like once every two weeks or less).
Problem? They've increased lately, and the gaps of time are longer than before. Instead of half of a second it's a full second to a second and a half.
FML.