Definition of Blastomycosis
Blastomycosis is a disease caused by the fungus Blastomyces dermatitidis. The fungus lives in moist soil and in association with decomposing organic matter such as wood and leaves. Lung infection can occur after a person inhales airborne, microscopic fungal spores from the environment; however, many people who inhale the spores do not get sick. The symptoms of blastomycosis are similar to flu symptoms, and the infection can sometimes become serious if it is not treated, especially if the infection spreads from the lungs to other organs.