barbiealonso, I'm going to be trying an elimination diet in late May, when preschool lets out for the summer (so I can control snacks, too). In addition to going gluten and casein-free, I"m going to be eliminating some other additives (colors) and ingredients (amines and salicylates). Then I'll be adding back in one area at a time to see if the behaviors/reactions return. I'll try to post when I'm ready to do it and let you know if I see behavior improvement. My kids also have eczema and occasional mouth ulcers (apthous ulcers), so I'm hoping this will go away, too.