My daughter is 13 years old and has been suffering for almost 3 months with constant vomiting. It starts with a severe headache in the very top of her head and her throat begins to hurt and her left upper abdomen begins to hurt bad. She sometimes has sharp pains run through her upper left abdomen. She vomits once or twice during the night, and once or twice during the day. For a while it was on a consistent schedule of vomiting for 3 to 4 days then fine for about 3 days. This went on for 2 1/2 months then it all suddenly stopped for about a week. She actually went to school for a whole week without missing--she's missed about 25 days so far. Then suddenly it started again only this time she has severe body aches and joints hurt really bad. She's had all blood work 3 times, a complete abdominal ultrasound, tests for parasites and an endoscopy. Everything tests normal but she is most definitely not normal! She has seen Pieds dr, GI specialist, and an infectious disease doctor and they can't find anything. We we have a close family friend with a child age 15 who is having similar symptoms on the same schedule except that he had diarrhea instead of vomiting. Does anyone recognize this or been through anything similar?