A couple of days ago, I had been running for about 40 mins easy when I had an episode of hives (urticaria). I got raised lumps all over my arms, chest and legs and had itchiness and slightly quickened pulse. I've had this before - this was the 5th time ever (first about 2 years ago). Each time the hives have been more intense.
What was different this time was that my vision started to go blurry and within 2 mins I lost all sight completely. I was 'blind' for about 15 mins before starting to get any sight back at all (like someone slowly turning up a dimmer switch).
Anyway, luckily another runner found me and helped me back and when I went to hospital I found I had a temperature of 34C. My core temp stayed very low for about 6 hours or so. Despite blood tests, urine tests etc none of the doctors could explain my symptoms and the next morning I was released with them saying "If it happens again, we'll run more tests". Great - what happens if I'm in the middle of nowhere blind and hypothermic?
Has anyone had these symptoms before or experience which could help?