**Your allergy symptoms may settle after exposure ends, but that does not mean your allergy has gone away.**
An allergen is a substance that triggers an allergic reaction, such as pollen, pet dander, or a food protein. How long your symptoms last depends on the trigger, continued exposure, and the type of reaction. Some childhood food allergies are outgrown, but you need a clinician's assessment before trying a food you previously reacted to. Avoid known triggers and track when symptoms occur to help your clinician identify a pattern.
When allergies fade
Common questions
Can Allergen go away on its own?
An allergen is a trigger, such as pollen or a food protein, rather than an illness. Your mild allergy symptoms may fade after exposure stops, but they can return with another exposure. Some childhood food allergies are outgrown; feeling better does not prove yours is gone. Avoid known triggers and see a clinician if symptoms recur or you want to know whether an allergy has resolved. Do not test a suspected food allergy by eating the food yourself. If you develop trouble breathing, throat swelling, or faintness during a reaction, use prescribed epinephrine immediately and call 911.