This isn't me, it's my DH. I'll start off by saying that he is trying to get a GP appointment but hasn't had any luck so far as all this has happened over Christmas and the GP is only seeing emergencies. He'll keep trying.
He's had two episodes of whatever this is, over the last few days, and it was only the second episode that made us realise the trigger was an unpleasant bowel movement.
DH has history of migraine and IBS but this is very different.
Almost immediately after getting off the toilet, he's experiencing pins and needles in his hands and feet, hives all over his arms, nausea, vertigo, and going very very flushed. DH describes it as feeling like a migraine without the headache, and it went away the first time when he slept for the night and the whole of the next day.
I have no idea where to even start with this and I know it's definitely something for the GP, but has anyone got any ideas?!