*sigh* My oriental 1-year old boy cat is once again sick. He has bad watery diarrhea and is extremely dehydrated. He is at vet currently getting some fluids back. All blood tests were normal. No fever. The diarrhea started out of nowhere 2 days ago, he also vomited quite many times. Vet took ultrasound and there really was nothing too out of ordinary, some intestine walls were bit more thicker than normal and some lymph nodes were swollen in his stomach. Vet said that he may have IBS. I read about the subject from internet and while it seems plausible is it normal that it starts this quickly out of nowhere? His stool has always been normal and he rarely vomits. Other thing the vet wondered was if it could be lymphoma. Homever she said that it's not very common in young cats. Has any one of you gone trough a similar situation? Do you think it could be lymphoma or IBS? I'm working with the vet to get more answers but scince it's soon weekend there are only emergency vets availabe who don't know a lot about cats.