This fungus causes allergic fungal sinusitis, characterized by the presence of Bipolaris in the sinuses. In certain people with severe allergies, the large spores of this fungus can travel to the sinuses (upper respiratory tract), where they attach to the mucus and grow, producing an unrelenting allergic reaction that progressively and permanently damages the sinuses).
This mold is a potential allergen and is the leading cause of allergic fungal sinusitis. Some of people may experience hay fever, asthma.