[Familial Mediterranean fever. Evidence of its autoimmune pathogenesis].

Immunological disturbances in FMF have not been previously reported. In present case, positivity for RA and Waaler-Rose test as well as increase of plasma IgG and IgM immunoglobulins during an episode of acute peritonitis is described. These findings, in association with very high levels of urinary FDP, suggest an autoimmune pathogenesis of the disease.