Introduction:

Histoplasmosis is a deep or systemic mycosis caused by a dimorphic fungus which may disseminate mainly in immunocompromised patients, such as those diagnosed with human immunodeficiency virus. Immune reconstitution syndrome is a paradoxical worsening of a known condition or a condition appearing after the start of antiretroviral therapy.

Objective:

Describe a case of disseminated histoplasmosis associated to immune reconstitution syndrome in a patient with human immunodeficiency virus infection.

Case report:

A case is presented of a male 32-year-old patient diagnosed with human immunodeficiency virus with a clinical status of three weeks' evolution. The current status developed after the start of antiretroviral therapy. It consisted in disseminated umbilicated papular nodules with pulmonary involvement, as well as positive Histoplasma capsulatum sl. histopathology and culture, and a positive histoplasma antigen test. A diagnosis of disseminated histoplasmosis with a cutaneous presentation was considered. It was the expression of immune reconstitution syndrome by unmasking. Treatment was started with liposomal amphotericin B, maintaining the antiretroviral therapy. Management was then continued with itraconazole for 12 months with improvement of the lesions.

Conclusions:

Timely clinical, histopathological and microbiological diagnosis was performed. The patient displayed an adequate response to treatment. This mycosis is curable and even preventable when a diagnosis is made in time, treatment is started early and the retroviral therapy is maintained.

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