Allergen - Wikipedia When an allergen enters the body of an individual that is predisposed to allergies, it triggers an immune reaction and the production of antibodies These allergen antibodies migrate to mast cells lining the nose, eyes, and lungs
Allergens: Types, Function, Risks - Verywell Health Key Takeaways Allergens are substances that cause the body to produce an allergic reaction Common allergy symptoms include a runny nose, congestion, cough, and sneezing Allergy treatment involves avoiding the allergen and using over-the-counter medications
Allergen: MedlinePlus Medical Encyclopedia As a result, the immune system reacts by making a type of antibody called immunoglobulin E (IgE) to defend against the allergen This reaction leads to allergy symptoms
Allergies - Symptoms and causes - Mayo Clinic Allergies happen when the immune system reacts to a foreign substance that gets inside the body These substances are known as allergens They include pollen, bee venom and pet dander Allergies also can happen due to certain foods and medicines that don't cause reactions in most people
What Is an Allergen? - Allergies. net Allergens are substances that trigger allergy symptoms Many types of things can be an allergen Allergens that affect one person may not affect other people
Allergen Defined | AAAAI An allergen is a usually harmless substance capable of triggering a response that starts in the immune system and results in an allergic reaction For instance, if you have an allergy to pollen, your immune system identifies pollen as an invader or allergen