Aug 24, 2024 · Allergic reactions can range from mild to severe. Sometimes, allergies can trigger a life-threatening reaction known as anaphylaxis. Hay fever, also called allergic rhinitis, can cause: …

May 2, 2024 · Contact dermatitis is an itchy rash caused by direct contact with a substance or an allergic reaction to it. The rash isn't contagious, but it can be very uncomfortable.

Oct 27, 2023 · If you think your hives or angioedema was caused by a known allergy to food or a medication, your symptoms may be an early sign of an anaphylactic reaction. Seek emergency care …

Sep 20, 2025 · It's important to understand and discuss what is an allergic reaction, what is a typical side effect and what you can tolerate in taking a medicine. Call 911 or emergency medical help if you …

Aug 24, 2024 · Sublingual medicines placed under the tongue are used to treat some pollen allergies. Emergency epinephrine. If you have a severe allergy, you might need to carry an emergency …

Oct 27, 2023 · The standard treatment for hives and angioedema is antihistamines that don't make you drowsy. These medications reduce itching, swelling and other allergy symptoms.

May 2, 2024 · Contact with certain substances, such as poison ivy, skin lotions and detergents, can cause an itchy rash. Here's how to manage this common form of dermatitis.

Apr 6, 2024 · If you have asthma, nasal polyps, chronic sinusitis or chronic hives (urticaria), you're more likely to have a reaction to aspirin or NSAIDs. When a reaction occurs, it can worsen symptoms of …

Sep 21, 2018 · Skin rashes are common. Soaps, detergents, plants and other substances can trigger red, itchy skin. Dr. Dawn Davis, a Mayo Clinic dermatologist, says these types of rashes can be the …

Oct 1, 2024 · Hives — also called urticaria (ur-tih-KAR-e-uh) — is a skin reaction that causes itchy welts. Chronic hives are welts that last for more than six weeks and return often over months or years.