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Anaphylaxis is a severe allergic reaction of rapid onset affecting many body systems. [ 5 ] [ 8 ] It is due to the release of inflammatory mediators and cytokines from mast cells and basophils , typically due to an immunologic reaction but sometimes non-immunologic mechanism.
Corticosteroids are generally indicated for moderate cases. In severe cases, adrenaline is used to reduce swelling and aid breathing. Allergen immunotherapy is an alternative treatment considered in some patients, with a success rate of 80%-90% in reducing symptoms, [3] but requiring a much longer duration of therapy. The choice of medications ...
Swelling is also a symptom of anaphylaxis, a severe allergic reaction, that’s a medical emergency, Dr. Davis says. Other symptoms include difficulty breathing, a rapid heart rate, nausea, hives ...
Angioedema is an area of swelling of the lower layer of skin and tissue just under the skin or mucous membranes. [1] [3] The swelling may occur in the face, tongue, larynx, abdomen, or arms and legs. [1] Often it is associated with hives, which are swelling within the upper skin. [1] [3] Onset is typically over minutes to hours. [1]
Allergic reactions are a relatively common cause of throat swelling in general, but sometimes the uvula can be affected alone. “This is known as uvular angioedema,” says Dr. Morrison.
Aside from these ambient allergens, allergic reactions can result from foods, insect stings, and reactions to medications like aspirin and antibiotics such as penicillin. Symptoms of food allergy include abdominal pain, bloating, vomiting, diarrhea, itchy skin, and hives. Food allergies rarely cause respiratory (asthmatic) reactions, or ...
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