<s>[INST] my 2.5 year old son has been pointing to his belly button and crying that it hurts. He also cries out in pain that his leg hurts also and sometimes his arm. What could be possible causes? He does have a small umbilical hernia but other than that nothing else. Thanks. [/INST] Lower abdominal pain, change in skin color and tenderness at the site, an irreducible swollen hernia, abdominal distension and/or fever may all be signs complications, of an umbilical hernia and require immediate surgical attention.  However, usually spinal hernias can have neurological symptoms such as sciatica, incontinence, problems walking, numbness, pain or tingling in the limbs. I think there are no connection with umbilical hernia. It seems he had comics, give him Charcoal 1 tablet and fennel. Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you and baby good health. </s>