[Addison's disease causing acute abdomen].

A 15 year-old girl with three days of upper abdominal pain was admitted to hospital. Vital parametres were within normal limits. Blood samples and abdominal computed tomography were normal. As pain increased diagnostic laparoscopy was performed and mesenteriel lymphadenitis was found. Thorough examinations were performed including laparotomy. A synachtentest showed an insufficient level of cortisol. The patient was diagnosed with Addison's disease and responded well to treatment with cortisone. Symptoms of adrenal insufficiency can be vague, and it is important to keep the diagnosis in mind in patients with unexplained abdominal pain.