My 4 year old daughter was just daignosed with GERD after an endscopy revealed she had chronic esophagitis. I will get the full dr.s report on Monday, but my question is this... My daughet has never spit up, vomited, etc, but she suffers from chronic diarrhea. She always complains of "belly hurts" and has foul smelling stool/ diarrhea everyday. She just had testing for Celiac, Cystic Fibrosis and hyperthyroidism and thank goodness, it's all negative. So what's causing the diarrhea? Is it the GERD? I can't find anything anywhere linking GERD and diarrhea. She also eats a ton of (healthy) food, but is not gaining any weight. No fast food, nothing friend, just healthy. She has been off of casein (milk) for about 4 months. Help would be much appreciated!