I get ocular migraines. Basically I slowly go blind over the period of 15 minutes and then am at the receiving end of the most unbearable headache which can last anything from 30 minutes to 8 hours. The vision may return after a couple of hours.

I can soften the blow by taking Migraleave, it stops the blindness and softens the headache but not by much. Makes me drowsy as hell, so either way I'm pretty much immobile no matter what I do... the only difference is that if I can pop the pill in time I can actually sleep through it.

Sucks if I don't have access to the drugs though. Only occurs 2-3 times a year so it's not like I carry them around with me all the time.