[Acquired immunodeficiency syndrome in an adolescent hemophiliac]

In an adolescent with hemophilia B, the diagnosis of AIDS was established in face of cachexia, orodigestive candidiasis, associated with lymphopenia, major decrease in T4/T8 ratio with marked decrease in T helper cells and presence of LAV-antibodies. The patient died rapidly from a cerebral infection due to Toxoplasma gondii. Difficulties in diagnosis and treatment of cerebral toxoplasmosis are discussed.