Jacob displayed first signs of sickness in February. It started with mouth ulcers, and then came diarrhea. Not just any kind of diarrhea - it was a diarrhea that never stopped. It would be bad, really really bad, for a day or two. Then he would have very soft stools for a couple of days. Then he would get very bad again. Sometimes, there were days with no stool at all, then there would be 10 exploding diapers the next day. He never had any diarrhea at night but he would wake up and immediately have an extremely watery poop. If I wasn't there to catch him when he woke up, I would find him soiled, wet, and very stinky. He had lots of undigested food in his stool. He lost weight, then regained it. On bad days, he would simply sway and fall over, out of a stand. He was grumpy, he was whiny, he was not my sunshine child anymore.
It was scary.
I took him to a doctor who wanted to put him on antibiotics. I left and never saw the doctor again. I called doctors in Germany, in the US. The symptoms just didn't make any sense. Everybody warned me to take care that he would not dehydrate. We made him drink, and drink - and we were very pleased to see that dehydration was not a problem. That, in turn, baffled the doctors - kids with diarrhea, especially with chronic diarrhea, do get dehydrated.
I don't know how many hours I spent on the Internet trying to find out what was going on with Jacob. His symptoms were baffling. The come-on-go in waves part of the illness was not explained by anything I read. The ulcers didn't fit. He looked to darn healthy to begin with. And the only thing I came up with that fit all his symptoms was celiac disease.