I thought I was the only person who got these, although mine never come with a headache or feeling lousy. It’s just the aura. If I shut things down for about twenty minutes all is well. When it’s going on, I can’t really see much. First time it happened I was driving and i thought I was having a stroke. Eye doctor and primary care both checked me out and said it will happen every so often. My triggers are very bright lights in the morning.
If I realize I am getting one...the first little zigzag light before it starts to expand...if I down some strong coffee and a few Motrin, it lessens the severity. It doesn't stop it though, and I resign myself to basically not seeing effectively for around 45 minutes. I just go to bed. My vision doesn't go dark (it isn't your eyes, it is an electrical disturbance in your brain), it is more shimmery gray or really just lack of data in the visual field. You can find approximations of what the auras look like on the internet, but it isn't exactly how it looks to me.
I used to get a bad headache afterwards but now it is very dull, if at all. I just feel sort of buzzed/fatigued for the rest of the day. When mine were diagnosed, my family doctor and eye doctor said it is actually kind of common (I know a few people who get them and now there are three of us in this thread alone) but since I only get them once every year or so, there is no need for meds or other treatment.