Welcome. Probably you've come here because your child suffers from loose stools and no doctor finds anything wrong with him or her. You've googled the symptoms, and here you are. My main article on the subject on this blog is titled "Enigma". The most helpful resources I found are located at the top of the right sidebar.
[BTW, those tongue ulcers my son had were not related to the CNDC. It's called "map tongue" and he still has it because one is born with it and it won't ever go away. It was a coincedence that they got better with the changed diet, so don't let that symptom confuse you.]