My son (aged 4) is very food intolerant. His symptoms include nose bleeds, ulcerated tongue, grumpyness, headaches, oppositional defiance symptoms and the list goes on. My daughter (aged 7) suffers from stomach aches, headaches and ulcerated tongue - although not as bad. We have followed the elimination diet in the past and have had success. But after being off the diet for 6 months both children's tongues are ulcerated again …