my child doesn't, but my DD had severe FTT and we had a gastro-enterologist do exploitative surgery & take biopsy's. If you are over the medicare threshold it doesn't end up costing that much to see them.

My 2 close friends have Crohns & Ulcerative colitis. I know the one with colitis can't have any diary or it makes it worse. I can ask them what is was like when they were kids.