Mold and yeast are two types of fungus. Both can cause allergic reactions. Fungal spores can circulate in the air and may cause allergic rhinitis when inhaled.
Review Date 11/18/2022
Updated by: Elika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.