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Food allergy is an immune system reaction that happens soon after eating a certain food. Even a tiny amount of the allergy-causing food can trigger symptoms such as hives, swollen airways and digestive problems. In some people, a food allergy can cause severe symptoms or even a life-threatening reaction known as anaphylaxis.
Regular injections of omalizumab may reduce food allergy reactions if small amounts of a food allergen are eaten by mistake. The first oral immunotherapy drug, Peanut (Arachis hypogaea) Allergen Powder-dnfp (Palforzia), also has been approved to treat children ages 4 to 17 years old with a confirmed peanut allergy.
A food intolerance can cause some of the same signs and symptoms as a food allergy, so people often confuse the two. A true food allergy affects the immune system. Even small amounts of the offending food can trigger a range of symptoms, which can be severe or life-threatening. In contrast, a food intolerance often affects only the digestive ...
Diagnosis involves the steps that your healthcare professional takes to find out whether you have an allergy. Your healthcare professional will likely: Ask detailed questions about your symptoms. Do a physical exam. Have you keep a detailed diary of symptoms and possible triggers. If you have a food allergy, your healthcare professional will ...
Allergy symptoms depend on what allergen is involved. The symptoms can affect the airways, sinuses and nasal passages, skin, and digestive system. 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: Sneezing.
For people with food allergies, symptoms can range from annoying to life-threatening. Learn about diagnosis and treatment of this common immune reaction.
Alpha-gal syndrome is a type of food allergy. It makes people allergic to red meat and other products made from mammals. In the United States, the condition usually begins with the bite of the Lone Star tick.
Food allergy is becoming increasingly common. Having an allergic reaction can be alarming, especially when you are not sure of the cause. The Division of Allergic Diseases diagnoses and treats food allergies. The diagnosis depends on a careful examination, selective skin testing or specific IgE blood tests. Food challenge testing may be performed.
Allergy medicines are available as pills, liquids, inhalers, nasal sprays, eye drops, skin creams and shots, also called injections. Many allergy medicines are available without a prescription. Here are the different types of medicine options available to treat allergies.
The reaction tends to occur only where your skin came into contact with nickel, but sometimes may appear in other places on your body. Nickel allergy signs and symptoms include: Rash or bumps on the skin. Itching, which may be severe. Redness or changes in skin color. Dry patches of skin that may resemble a burn.