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- Dictionaryallergy/ˈalədʒi/
noun
- 1. a damaging immune response by the body to a substance, especially a particular food, pollen, fur, or dust, to which it has become hypersensitive. Similar
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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] .
Aug 24, 2024 · The symptoms can affect the airways, sinuses and nasal passages, skin, and digestive system. Allergic reactions can range from mild to severe. Sometimes, allergies can trigger a life-threatening reaction known as anaphylaxis. Hay fever, also called allergic rhinitis, can cause: Sneezing.
: exaggerated or pathological immunological reaction (as by sneezing, difficult breathing, itching, or skin rashes) to substances, situations, or physical states that are without comparable effect on the average individual. 3. : medical practice concerned with allergies. 4. : a feeling of antipathy or aversion. Synonyms. averseness. aversion.
ALLERGY definition: 1. a condition that makes a person become sick or develop skin or breathing problems because they…. Learn more.
Allergy occurs when a person's immune system reacts to substances in the environment that are harmless to most people. These substances are known as allergens and are found in dust mites, pets, pollen, insects, ticks, moulds, foods, and drugs (medications).
Dec 21, 2022 · Allergies 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.
May 16, 2018 · An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are: Pollen. Dust mites. Mold spores.
Jul 19, 2024 · An allergy is an immune system response to a foreign substance that’s not typically harmful to your body. Learn more about the types, causes, and symptoms of...
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.
May 19, 2024 · An allergy is an overactive immune response to a substance called an allergen that is usually harmless, such as pollen or dust. The response results in symptoms such as...
