Umbilical and Abdominal Wall Hernias in Babies — What Heals on Its Own vs What Needs Surgery

A soft bulge at the belly button, more noticeable when a baby cries or strains, is one of the most reassuring findings in pediatric surgery — because in the great majority of babies, it needs nothing more than time.

What Causes an Umbilical Hernia?

Before birth, the umbilical cord passes through an opening in the abdominal wall. Normally this opening closes on its own in the weeks after birth. In some babies it stays slightly open, allowing a small amount of abdominal tissue to bulge out under the skin at the belly button — this is an umbilical hernia.

What Normal Watching Looks Like

Umbilical hernias are extremely common in infants, especially those born premature, and the overwhelming majority close on their own without any treatment:

• The bulge is soft, painless, and easily pushed back in
• It may get bigger with crying or straining and smaller when the baby is calm and lying down
• Most close by age 2, and the great majority by age 4–5

When Surgery Is Considered

Surgery is considered only in a minority of cases:

• The hernia is unusually large (generally more than about 1.5–2 cm)
• It is still clearly present beyond age 4–5
• It becomes painful, or changes character suddenly

Repair, when needed, is a short, straightforward day-care procedure with an excellent, permanent result.

What Not to Do

Taping a coin or other object over the bulge, or using a belly binder, does not speed up closure and is not recommended — these old home remedies can occasionally irritate the skin without changing the outcome. The hernia closes at its own pace as the abdominal muscles strengthen with growth.

Related: Other Abdominal Wall Hernias

Less commonly, a similar bulge can appear slightly above or below the belly button rather than exactly at it — these "epigastric" or paraumbilical hernias follow the same general principle of watchful waiting in early childhood, with surgery considered if persistent, and are assessed the same way on examination.

Why most umbilical hernias close on their own, and when surgery is considered.