My son, 19, has been sick for a couple of months. He gets sick with diareaha or he throws up after he eats anything. He has been to 2 doctors and has had multiple tests from blood tests to stool samples. It is not bacterial. No one seems to know. He has lost 12 pounds. We have him now on pedialite and probiotics to make sure he is getting nutrition. We are at a loss. He is 24 hours away from us at College and we are not sure what direction to go. Any suggestions would be great.