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  2. Allergies in children - Wikipedia

    en.wikipedia.org/wiki/Allergies_in_children

    1 in 8 have allergic rhinitis. 3-6% are affected by food allergy. Children in the United States under 18 years of age: [3] Percent with any allergy: 27.2%. Percent with seasonal allergy: 18.9%. Percent with eczema: 10.8%. Percent with food allergy: 5.8%. Children in the United Kingdom: [2] 1 in 6 with eczema.

  3. Allergy - Wikipedia

    en.wikipedia.org/wiki/Allergy

    Food allergies: 7.6% of children and 10.8% of adults. [131] Peanut and/or tree nut (e.g. walnut) allergy affects about three million Americans, or 1.1% of the population. [129] 5–7% of infants and 1–2% of adults. A 117.3% increase in peanut allergies was observed from 2001 to 2005, an estimated 25,700 people in England are affected.

  4. Anaphylaxis - Wikipedia

    en.wikipedia.org/wiki/Anaphylaxis

    Anaphylaxis (Greek: ana- ‘against’ + phylaxis ‘guarding’) is a serious, potentially fatal allergic reaction and medical emergency that is rapid in onset and requires immediate medical attention regardless of the use of emergency medication on site. [4] [5] It typically causes more than one of the following: an itchy rash, throat closing ...

  5. List of allergens - Wikipedia

    en.wikipedia.org/wiki/List_of_allergens

    Allergies to the sugar carbohydrate found in beef, venison, lamb, and pork called alpha-gal. It is brought on by tick bites. [43] Allergic reaction to pork is an exception, as it may also be caused by pork-cat syndrome instead of alpha-gal allergy. Rice: Sneezing, runny nose, itching, stomachache, eczema.

  6. Food allergy - Wikipedia

    en.wikipedia.org/wiki/Food_allergy

    Frequency. ~6% (developed world) [ 1][ 2] A food allergy is an abnormal immune response to food. The symptoms of the allergic reaction may range from mild to severe. They may include itchiness, swelling of the tongue, vomiting, diarrhea, hives, trouble breathing, or low blood pressure. This typically occurs within minutes to several hours of ...

  7. Allergen - Wikipedia

    en.wikipedia.org/wiki/Allergen

    Allergen. An 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 . In technical terms, an allergen is an antigen that is capable of stimulating a type-I hypersensitivity ...

  8. Allergic rhinitis - Wikipedia

    en.wikipedia.org/wiki/Allergic_rhinitis

    Allergic rhinitis, of which the seasonal type is called hay fever, is a type of inflammation in the nose that occurs when the immune system overreacts to allergens in the air. [ 6] Signs and symptoms include a runny or stuffy nose, sneezing, red, itchy, and watery eyes, and swelling around the eyes. [ 1] The fluid from the nose is usually clear ...

  9. Hives - Wikipedia

    en.wikipedia.org/wiki/Hives

    Hives, also known as urticaria, is a kind of skin rash with red, raised, itchy bumps. [1] Hives may burn or sting. [2] The patches of rash may appear on different body parts, [2] with variable duration from minutes to days, and does not leave any long-lasting skin change. [2] Fewer than 5% of cases last for more than six weeks (a condition ...