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[Histoplasmosis: not only a tropical disease]
E R Bregani1, T Van Tien, T Ceraldi
1Divisione di Medicina d'Urgenza, Ospedale Maggiore, IRCCS, Policlinico, Milano. rino_bregani@yahoo.it
Recenti Progressi in Medicina
|August 10, 2000
Summary
Histoplasmosis, a fungal infection from Histoplasma capsulatum spores, typically causes mild illness but can lead to severe disease in immunocompromised individuals. Diagnosis involves yeast visualization or culture, with amphotericin B and azoles as primary treatments.
Area of Science:
- Mycology
- Infectious Diseases
- Public Health
Background:
- Histoplasmosis is a globally endemic fungal infection caused by Histoplasma capsulatum spores.
- It presents a spectrum of illness, from asymptomatic infections to severe disseminated disease.
- Risk factors for severe disseminated histoplasmosis include immunosuppression and chronic illnesses.
Purpose of the Study:
- To summarize the epidemiology, clinical presentation, diagnosis, and treatment of histoplasmosis.
- To highlight diagnostic methods and therapeutic strategies for Histoplasma capsulatum infections.
Main Methods:
- Review of literature on Histoplasma capsulatum infections.
- Analysis of diagnostic techniques, including microscopy and culture.
- Evaluation of treatment guidelines for histoplasmosis.
Main Results:
- Most Histoplasma capsulatum infections are asymptomatic and self-limiting.
- Pneumonia can occur with high spore exposure; disseminated disease is common in immunocompromised patients.
- Amphotericin B is the initial treatment, followed by azoles for maintenance; itraconazole is preferred for less severe disseminated cases.
Conclusions:
- Early diagnosis and appropriate treatment are crucial for managing histoplasmosis.
- Treatment strategies vary based on disease severity and patient immune status.
- Fluconazole shows only moderate efficacy in treating histoplasmosis.