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Alternative names Return to top
North American blastomycosis; Gilchrist's diseaseDefinition Return to top
Blastomycosis is a rare fungal infection caused by inhaling a fungus (Blastomyces dermatitidis), which is found in wood and soil.Causes, incidence, and risk factors Return to top
Blastomycosis occurs most often in people living in the south-central and midwestern US and Canada. Exposure to soil is the key risk factor. The disease usually affects people with compromised immune systems, such as people with HIV or organ transplant recipients.
Men are more likely to be affected than women. Lung infection may produce no symptoms, but when the infection is widespread, skin lesions or bone lesions may appear and the urogenital system (bladder, kidney, prostate, testes) may be affected.
The incidence of blastomycosis is 1-2 out of every 100,000 people in geographic areas where blastomycosis occurs most frequently. It is even less common outside those areas.
Symptoms Return to top
Signs and tests Return to top
Treatment Return to top
Though not all blastomycosis infection in the lungs requires antibiotics, when the disease has spread outside of the lungs or become severe in the lungs, amphotericin B, itraconazole, or other antifungal agents may be prescribed. Periodic follow-up is recommended to detect any recurrence of the disease.Expectations (prognosis) Return to top
Patients with limited skin lesions and relatively mild lung involvement usually recover completely. Untreated, more severe disease is progressive and can lead to death.Complications Return to top
Calling your health care provider Return to top
Call your health care provider if symptoms suggesting blastomycosis occur.Prevention Return to top
Avoiding travel to areas where the disorder occurs will prevent exposure, but this is not practical for most people. Although other prevention is unknown, the disorder is rare except in people who are immunosuppressed. Update Date: 7/8/2004 Updated by: Daniel Levy, M.D., Ph.D., Infectious Diseases, Greater Baltimore Medical Center, Baltimore, MD. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |