[Familial Mediterranean fever in a German family].

A 14-year-old German boy had the characteristic signs and symptoms of familial mediterranean fever with recurrent attacks of fever which ran a uniform course and were self-limiting. Laparoscopy revealed sterile peritonitis and marked humoral inflammatory signs. Each acute phase was confined to three days, alternating with symptom-free intervals which lasted for as long as several months. The boy's father and three other members of the paternal family have had similar disease symptoms. Even in patients who are not members of a predisposed ethnic group familial mediterranean fever should be included in the differential diagnosis as a rare cause of recurrent episodes of fever of unknown aetiology.