B39.5

Clinical Causes: Inhalation of fungal spores from the environment, especially areas contaminated with bird or bat droppings. Environmental exposure to soil or materials that harbor the Histoplasma duboisii fungus. Travel to or residence in regions where African histoplasmosis is endemic, such as parts of Central and West Africa.

Key Symptoms: Skin lesions, which can appear as papules, nodules, ulcers, or plaques. Swelling of lymph nodes, commonly in the neck, axilla, or groin. Bone pain or deformities if the infection spreads to the bones. Persistent fever, fatigue, and weight loss in more severe cases. Abscess formation in affected tissues, leading to swelling and discomfort. Lesions may mimic other infectious or neoplastic conditions, complicating diagnosis.

Diagnosis Path: Histopathological examination of tissue biopsies revealing characteristic fungal elements. Culture of biopsy samples on specific media to grow and identify Histoplasma duboisii. Serological tests to detect antibodies or antigens associated with the infection. Imaging studies, such as X-rays or CT scans, to assess bone and tissue involvement. Molecular techniques like PCR in specialized laboratories for confirmation.

Treatment Protocols: Itraconazole as a first-line oral antifungal therapy for localized and less severe cases. Amphotericin B for more extensive or disseminated disease, especially in immunocompromised individuals. Prolonged courses of therapy may be necessary, often lasting several months, to ensure complete resolution. Monitoring for medication side effects and regional drug resistance patterns. Supportive care, including wound management and addressing complications, as needed.