This is a place to ask questions about hernia repair and receive a personal answer from a highly qualified doctor. You will also find support from other members who share your interest in hernia repair. A hernia occurs when part of an internal organ bulges through a weak area of muscle. Most hernias occur in the abdomen. Types of hernias, include, Inguinal, in the groin; Umbilical, around the belly button; Incisional, around or through a scar; Hiatal, in the diaphragm; Congenital Diaphragmatic, caused by a birth defect.