Hernias en niños

A hernia occurs when a section of bowel pushes out through a weakness in the muscle. The hernia looks like a bulge under the skin. In baby boys, a bulge in the scrotum is the most common type of hernia and is the result of a persistent canal between the scrotum and abdomen that normally closes when a fetus is developing. A hernia can move back into the abdomen through the passage. So you may not see the bulge all the time. You may see it most when your baby is straining (such as during crying, feeding, or a bowel movement).