Allergen - Wikipedia
WebAn allergen is a type of antigen that produces an abnormally vigorous immune response in which the immune system fights off a perceived threat that would otherwise be harmless to the body. Such reactions are called allergies.
Allergens: Types, Function, Risks - Verywell Health
WebDec 14, 2021 · Allergic reactions are symptoms that result from your body creating these antibodies. Allergies are common, affecting more than 50 million Americans. Types of allergens include those that are airborne or those that arise from contact with your skin, from food, and from medications.
Allergies - Symptoms and causes - Mayo Clinic
WebAug 5, 2022 · When you come into contact with the allergen, your immune system's reaction can inflame your skin, sinuses, airways or digestive system. The severity of allergies varies from person to person and can range from minor irritation to anaphylaxis — a potentially life-threatening emergency.
Allergen: MedlinePlus Medical Encyclopedia
WebAn allergen is a substance that can cause an allergic reaction. In some people, the immune system recognizes allergens as foreign or dangerous. 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 Overview: Symptoms, Treatments, and More - Healthline
WebJun 5, 2018 · Causes. Treatments. Natural remedies. Diagnosis. Blood test. Prevention. Complications. Asthma. Cold. Cough. Bronchitis. Babies. Takeaway. An allergy is an immune system response to a foreign...
National Institute of Environmental Health Sciences: Allergens
WebSep 7, 2022 · Allergies arise if the body's immune system overreacts to certain foreign substances (allergens) that are normally harmless in most people. Common allergens include pollens, fungal spores, house-dust mites, and animal epithelial materials but can also include drugs, biologic products, and insect venoms.
Allergies: Symptoms, Reaction, Treatment & Management - Cleveland Clinic
WebAllergies are your body’s reaction to normally harmless substances. Allergy symptoms range from mild to life-threatening. Treatments include antihistamines, decongestants, nasal steroids, asthma medicines and immunotherapy.
Overview: Allergies - InformedHealth.org - NCBI Bookshelf
WebAug 8, 2023 · Allergies occur when the body overreacts to a harmless substance. Allergies are common – especially ones to pollen, dust mites and animals. Typical symptoms of allergies include a runny or stuffy nose, itching and a rash. Avoiding contact with the allergy -triggering substance can help.
Types of Allergies: Triggers, Symptoms, Tips for Managing
WebDec 17, 2021 · 6 Common Types of Allergies. By Yvelette Stines. Published on December 17, 2021. Medically reviewed by Jurairat J. Molina, MD. Print. Table of Contents. View All. What Causes Allergies? Types of Allergens. Types of Allergic Reactions. Identifying and Managing Symptoms. Frequently Asked Questions. Next in Allergies Guide. Allergy …
Allergen | Description, Types, & Immune Response | Britannica
WebAllergen, substance that in some persons induces the hypersensitive state of allergy and stimulates the formation of reaginic antibodies. Allergens may be naturally occurring or of synthetic origin and include pollen, mold spores, dust, lint, animal dander, insect debris, foods, blood serum, and.
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