Allergy

An allergy is a hypersensitivity reaction by the body's immune system to typically harmless substances in the environment, called allergens. This overreaction triggers the release of histamine and other chemicals, leading to a range of symptoms. The severity of an allergic reaction can vary greatly, from mild discomfort like a runny nose or itchy skin to severe, life-threatening anaphylaxis. Common allergens include pollen, dust mites, food items, insect stings, medications, and certain materials. Diagnosis often involves skin prick tests or blood tests to identify specific allergens. Management of allergies includes avoiding allergens, taking antihistamines or other medications to alleviate symptoms, and, in severe cases, carrying an epinephrine auto-injector.

Allergy meaning with examples

• My severe peanut allergy requires constant vigilance. Accidental ingestion can trigger a dangerous reaction. I meticulously read food labels and ask about ingredients when eating out to avoid exposure. Even trace amounts can cause hives, swelling, and difficulty breathing, necessitating an immediate epinephrine injection and a trip to the emergency room.
• Seasonal allergies are a common nuisance, causing me to sneeze and have itchy eyes every spring. Pollen from trees and flowers is the culprit. Antihistamines provide some relief, but I also try to stay indoors when pollen counts are high and use an air purifier to minimize exposure indoors. Avoiding specific allergen-inducing plants and going out early helps.
• After a bee sting, I experienced a severe allergic reaction with swelling and hives, the doctor prescribed antihistamines. Now, I carry an epinephrine auto-injector as a precaution. The fear of another sting is always present, and I’m very cautious when outdoors. This event changed my perspective, as I'm now aware of the severe complications of a bee sting allergy.
• My dog exhibits allergy symptoms, scratching excessively and developing skin rashes. After blood tests, the vet identified a dust mite allergy. To treat this, the vet recommended a hypoallergenic diet, regular bathing, and environmental adjustments. He has to stay away from carpets and use special filters and cleaning products.
• A food allergy to shellfish resulted in stomach cramps and vomiting. I now carefully check all restaurant menus and ingredient lists to avoid consuming any seafood. Fortunately, mild reactions can be treated with antihistamines. But, there's always the underlying concern of cross-contamination in kitchens.