Male fetuses have a passage that connects the belly and scrotum. This passage is called the inguinal canal. Female fetuses also have an inguinal canal that connects the belly with the labia. In boys, the testicles form in the belly. Just before birth, the testicles move down through the passage into the scrotum. In females, a ligament from the uterus passes through the passage. In both boys and girls, the passage normally closes before birth. If it doesn't, a loop of the intestine can move down from the belly through the passage in the groin. This is called a hernia. Although females can get inguinal hernias, they're much more common in males.
A hernia may appear as a bulge in the groin (or scrotum in males). It may become more noticeable if your child is crying or struggling.
The condition of the hernia can help determine how quickly it needs to be treated:
- Reducible. It goes back in by itself, or it can be pushed back in.
- Irreducible. It can't be pushed back in.
- Incarcerated or strangulated. The intestine is trapped (incarcerated). If this happens, you won't be able to push the hernia back in. If the trapped hernia isn't treated, it may become strangulated. This means the area loses blood supply and the tissue may die. This needs emergency surgery. Your child needs treatment right away.
To reduce the risk of a simple hernia becoming trapped and becoming serious, surgery is advised for all babies with a hernia.