The umbilical cord serves as a conduit between the mother and its developing fetus. It supplies the fetus with oxygen and blood coming from the mother. It is present in mammals except for the platypus – an egg-laying mammal. Oftentimes, the hole that is left by the excision of the umbilical cord closes soon after birth. An umbilical hernia is defined as a health condition wherein the abdominal muscles at the back of the navel are damaged and do not join completely. This causes the intestine and other underlying tissues inside the abdominal cavity to protrude outward through the weak spot around the navel. Its incidence in neonates is around 20%.
Umbilical hernias are typically harmless and don’t cause any discomfort. The majority of umbilical hernia cases will close on its own. However, if an umbilical hernia doesn’t close on its own by age 4, it will warrant medical treatment.