How can you identify an umbiliical hernia?

Physical Exam: An umbilical hernia will manifest itself as a palpable bulge at the belly button. Sometimes, these can be "pushed back in"; other times, they protrude constantly. These are not subtle--no testing is required other than a physical examination.

Lump and/ or pain: You may feel a lump and/or have pain immediately under your belly button. You may also feel the lump come and go, or actually be able to push the lump back through the hernia defect and in to the abdominal cavity.