I've had it for years but its been especially bad the last few years, so much so I very rarely leave the house unless I really have too. I suffer every day but I go through periods where my body reacts to everything I eat. Even drinking water. So now I don't eat during the day and just eat at night, so I can work during day (work from home) but because I eat at night I suffer cramps during night And have severe diahrea in the morning, once I was so bad and lost so much weight I was admitted to hospital and was on nil by mouth and just on a drip and I still went to loo 30 plus times a day. It's ruining my life. I've tried so many different meds, but nothing works. Have you had anything that works for you? It's not like I can avoid things in my diet as I now eat very little, I'm almost scared to eat, and every time I do I suffer :-(