Twenty-seven patients suffering AIDS and disseminated histoplasmosis were included in this study, comprising twenty-three males and four females, from 18 to 46 years of age (mean=32.9). The most frequent clinical manifestations were fever, weight loss, anaemia, skin lesions, pulmonary micronodules, hepatosplenomegaly and adenomegalies. All of them presented other infectious diseases or neoplasias frequently found in AIDS patients. The diagnosis of histoplasmosis was based upon the finding of Histoplasma capsulatum in microscopic examination or in cultures from the following specimens: skin scrapings, bone marrow aspiration, bronchoalveolar lavage, blood cultures, buccal biopsies and lymph node biopsy. Serologic reactions, searching for antibodies, were positive in 11 cases. Itraconazole by oral route, at a daily dose of 200 mg (24 cases) or 400 mg (3 cases), was administered for 6 months. Those patients who were clinically cured after receiving this scheme of treatment were treated with itraconazole 100 mg day-1 as a suppressive therapy. Twenty-three patients were considered responders, 1 as a non-responder and 3 non-assessable. The average survival time was 7.8 months and eleven cases are still alive. Itraconazole proved to be a useful medication in disseminated histoplasmosis associated with AIDS and it was very well tolerated.