My son had abdominal pain for 3 weeks, and the doctors still not sure what cause the pain. The pain is in the left side of the stomach and also going to the back side. He also got purpura on his leg, not sure if this is related. . He got Nexium , Buscopan. Then the doctor diagnose he got Amuba Dysentry and he got Flagyl for medication. But after a week took Flagyl, still in pain. Now in the hospital, the doctors still could not diagnose what the disease. Please help... Thanks