Meckel’s diverticulum is the most common anomaly of the small intestine. It is present in almost 2% of the population; its most common location is in the terminal part of the ileum. In 4–10% of the affected population, it manifests itself as acute complications, such as bleeding, inflammation of the diverticulum or obstruction of the bowel lumen. In over half of all cases, the complications of Meckel’s diverticulum arise before the age of two. Clinical findings are much less frequent in adolescents or adults. We present a case of a 21-year-old female with acute abdominal pain, due to complications in connection with previously undiagnosed Meckel’s diverticulum. We discuss the epidemiology, clinical findings, diagnostic procedures, and treatment. There is little possibility that the diagnosis of Meckel’s diverticulum is made before surgical treatment due to complications. In symptomatic cases, it requires surgical removal, either by resection of the affected segment or, less commonly, by removing a small part of the intestinal wall that contains the diverticulum. Asymptomatic diverticula do not require any kind of treatment.