Aug 24, 2024 · Allergies happen when the immune system reacts to a foreign substance that gets inside the body. These substances are known as allergens. They include pollen, bee venom and pet …

Apr 1, 2025 · Allergies are your immune system’s overreaction to foreign substances. When you touch, inhale or eat something you’re allergic to, your body thinks it’s harmful and reacts to try to get rid of it. …

Dust mite allergy, also known as house dust allergy, is a sensitization and allergic reaction to the droppings of house dust mites. The allergy is common [49] and can trigger allergic reactions such as …

Nov 20, 2023 · Allergies that you get at similar times each year (seasonal allergies) are usually caused by pollen from trees, grasses, and weeds. Most trees release pollen in the spring, followed by grasses...

Jul 7, 2025 · 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 allergies, and how they're treated.

Apr 11, 2026 · Allergy symptoms can present in varying ways and degrees, depending on the allergy type and severity. Here’s everything you need to know.

Nov 19, 2025 · Allergies can cause a variety of symptoms such as a runny nose, sneezing, itching, rashes, swelling, or asthma. Allergies can range from minor to severe. Anaphylaxis is a severe …