My son is suffering from a strange problem. Every after 15 to 20 days he gets fever and this is consistent from last 1 year. He is 7 years old. There were many instances where he had 104 fever. His physical appearance changed, his hands and legs are much slimmer than before and he also lost some weight - not sure how much. Many pediatrician have seen my son but unable to find the root cause. A lot of test has been done including blood test, chest x-ray, stomach ultrasound and many others. Can anyone suggest what problem my son is facing and what should I do now.