Blastomyces is a type of fungus that can cause an infection known as blastomycosis. This fungus is commonly found in moist soil and decaying organic matter, particularly in certain regions of North America. When spores are inhaled, they can lead to respiratory issues and other symptoms. Infection with Blastomyces can affect various parts of the body, including the lungs, skin, and bones. Symptoms may include cough, fever, and skin lesions. Diagnosis typically involves laboratory tests, and treatment usually requires antifungal medications to help eliminate the infection.