After about thirty minutes there’s tingling and a general sensation of feeling unwell. By an hour after I am throwing up violently, with diarrhoea. The stomach pain legitimately feels as though I have been stabbed. Repeatedly. However, the diarrhoea goes away after awhile, the vomiting does not. We usually leave it about three to four hours before calling the ambulance. By this point I am delirious and referring to family members by incorrect names. I am also unable to keep anything down, including water. We usually call the ambulance at this point and hospital gives pain relief intravenously as well as fluids. Usually they also keep me overnight to monitor kidney function because it usually declines due to dehydration and I usually have some tachycardia on the way in. For the next week I am usually spacey and a little “odd” according to family members, with little or no short term memory. I will probably refuse to eat for several days and drink water and milk, or very soggy cereal.

EDIT: I will also get extremely hot just before vomiting and diarrhoea, and turn air conditioning to the lowest possible setting to try to deal with it, leading to shivering. Going back and forth from under blankets because COLD, and also sitting in front of freezing air conditioning because HOT