Cryoglobulinemia: a complication of infectious disease.

We report on a 23-year-old male patient with general weakness, subfebrile temperatures, and arthralgia. The first symptoms were observed some months after a severe cytomegalovirus mononucleosis-gastroenteritis. High titers of cryoglobulins suggested an autoimmunological process. This case is interesting because of the association between cytomegalovirus infection and cryoglobulinemia. In conclusion, the differential diagnosis of autoimmune disease should be considered in the course of viral infections.