Allergy is a condition in which the body’s immune system reacts abnormally to substances that are normally harmless. These substances, known as allergens, may include dust, pollen, certain foods, medicines, animal dander, or insect bites. When a person with an allergy comes in contact with these allergens, the immune system reacts and produces symptoms such as sneezing, itching, skin rashes, watery eyes, runny nose, or swelling.

The severity of allergic reactions can vary from mild irritation to more serious symptoms that affect breathing and overall comfort. Allergies can sometimes interfere with daily activities and reduce quality of life if not properly managed. Avoiding known allergens, maintaining good hygiene, and using appropriate medication can help control allergic reactions. Proper medical advice and timely treatment are important to manage allergies effectively and prevent complications.