10yr old female has extream sporadic abdominal pain, doctors say its constipation, x-ray, ultrasound, barrium enima say its not. Her bowls are slow in clearing the barrium. She has developed petichi on extremidies. Rash like bumps on elbows and lower legs. High WBC, she is anemic. She is eating and drinking very little. All cultures negative. It is not HSP. What is it?