Umbilical hernia is a condition in which the intestine protrudes through the abdominal muscles at the belly button.Many infants are born with an umbilical hernia. Umbilical hernias can also be acquired in adulthood, more often in women. The common sign of an umbilical hernia is a protruding bellybutton, which in infants may be most noticeable when they cry. Many hernias close on their own by age one, and most by age three .Large hernias ,hernias that don’t close or infected ones may need surgica