Anaphylaxis shock
Now I know what it looks like. My BIL and I were working the deer leases over the weekend. He got stung by a wasp and ten minutes later was on the ground, unconcious, shallow breathing, eyes rolling up. Fortunately, we were not in the deep woods and instead on his farm so we were able to get an ambulance there.
My BIL has been stung before without a reaction, and I got stung on Saturday without a reaction. Sometimes you just don't know, I guess. He was out of the ER yesterday.
The doctor prescribed an Epinephrine injector to carry with him now.