[Primary HIV infection. Case histories].

More than 50% of individuals with primary HIV infection have a symptomatic febrile illness associated with seroconversion. The most common clinical picture is a mononucleosis-like or influenza-like illness but almost any organ system may be involved, and primary HIV infection is often an imitator of other acute diseases. Six cases of symptomatic primary infection are described, one with a characteristic presentation, and five cases respectively presenting with colitis, rhabdomyolysis, epiglottitis, cold agglutination haemolysis and meningitis as marked symptoms.