Hi! My 3 year old has had vomiting diarrhea for 5 days. Went to er on day 2 for dehydration. Today was the first day she ate and felt better. This evening we noticed swollen knees and hands and a rash on her elbows, knees, arm pits, hands. Benadryl has seemed to help. What could this be?
Hi...by what you say the same virus which has caused the diarrhea might have caused the swelling of joints and rash. It is common in viral illness. Another possibility is that it could be a reactive arthritis to the virus causing diarrhea. If the child is otherwise active, need not worry. Regards -