A hernia, or extra-abdominal hernia, in a 2-year-old, 8-month-old baby may be caused by underdevelopment of the white line of the abdomen, for example, or by increased intra-abdominal pressure from frequent crying and coughing. An extra-abdominal hernia is a condition in which an organ or tissue in the body leaves its normal anatomical site and passes through a weakness or defect in the abdominal wall into another part of the body. The cause of an extra-abdominal hernia is usually a decrease in the strength of the abdominal wall and an increase in intra-abdominal pressure. Extra-abdominal hernias may result when there are certain congenital factors that result in abdominal wall defects or underdevelopment. Intra-abdominal pressure can be increased by violent coughing and crying, which carries out compression of intra-abdominal organs protruding towards the weak area, causing a hernia, or both conditions at the same time. Children aged 2 years and 8 months have immature abdominal wall tissues due to age or congenital factors, and increased intra-abdominal pressure can lead to hernias when they cry violently. When the hernia is in the small intestine, it may cause mesenteric compression, which may lead to intestinal necrosis. When hernia occurs, it is recommended to go to the hospital for diagnosis and treatment.