Skip Navigation
girlshealh.gov glossary
girlshealth.gov home
(Alérgeno)
An allergen is a medical word for anything that causes an allergic reaction. Allergens can be many different things, including grass, dust mites, or animal dander - the stuff that flakes off dogs' and cats' skin.
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.