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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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noun
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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. These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis. Symptoms may include red eyes, an itchy rash, sneezing, coughing, a runny nose, shortness of breath, or swelling. Note that food ... Wikipedia