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- Allergy, hypersensitivity reaction by the body to foreign substances (antigens) that in similar amounts and circumstances are harmless within the bodies of other people. Antigens that provoke an allergic reaction are called allergens.
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Allergy. Allergies, also known as allergic diseases, are various conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment. [11] . These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis. [1] .
An allergic response is a hypersensitive immune reaction to a substance that normally is harmless or would not cause an immune response in everyone. An allergic response may cause harmful symptoms such as itching or inflammation or tissue injury. Mechanism. Allergies are an abnormal immune reaction.
Allergic reactions (hypersensitivity reactions) are inappropriate responses of the immune system to a normally harmless substance. Usually, allergies cause sneezing, watery and itchy eyes, a runny nose, itchy skin, and rash. Some allergic reactions, called anaphylactic reactions, are life threatening.
- James Fernandez
- 1499 min
Aug 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.
- 2023/08/08
Nov 30, 2020 · Allergies are immunological reactions that according to psychoneuroimmunology may be modulated by psychological influences. Psychosocial stress is a clear predictor of allergic disease. There are only a handful of studies on psychotherapy in patients with allergies.
- Uwe Gieler, Tanja Gieler, Eva Milena Johanne Peters, Dennis Linder
- 10.1111/ddg.14328
- 2020
- 2020/11
Apr 23, 2018 · Although allergies might seem a world away from mental health, a new study finds that common allergic conditions increase the risk of psychiatric problems. Medical News Today Health Conditions
Allergic Reaction Defined. Share this page: An allergic reaction occurs when the immune system overreacts to a harmless substance known as an allergen. The immune system protects the body from infections, viruses and diseases.
