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Fexofenadine, sold under the brand name Allegra among others, [10] is an antihistamine pharmaceutical drug used in the treatment of allergy symptoms, such as hay fever and urticaria. [ 11 ] Therapeutically, fexofenadine is a selective peripheral H 1 blocker .
Bilastine is an antihistamine medication used to treat hives , allergic rhinitis and itchy inflamed eyes (allergic conjunctivitis) caused by an allergy. [6] It is a second-generation antihistamine and takes effect by selectively inhibiting the histamine H 1 receptor , preventing these allergic reactions. [ 7 ]
H 1 antagonists, also called H 1 blockers, are a class of medications that block the action of histamine at the H 1 receptor, helping to relieve allergic reactions.Agents where the main therapeutic effect is mediated by negative modulation of histamine receptors are termed antihistamines; other agents may have antihistaminergic action but are not true antihistamines.
Allergy immunotherapy can be administered orally (as sublingual tablets or sublingual drops), or by injections under the skin (subcutaneous). [52] [53] Immunotherapy contains a small amount of the substance that triggers the allergic reactions. [54] Ladders are also used for egg and milk allergies as a home-based therapy mainly for children.
Shellfish allergies are highly cross reactive, but its prevalence is much higher than that of fish allergy. Shellfish allergy is the leading cause of food allergy in U.S adults. [31] As of 2018 six allergens have been identified to prawn alone; along with crab, it is the major culprit of seafood anaphylaxis. [13]
The Asthma and Allergy Foundation of America (AAFA) is the leading patient organization for people with asthma and allergies and the oldest asthma and allergy patient group in the world. AAFA is dedicated to saving lives and reducing the burden of disease for people with asthma, allergies, and related conditions through research, education ...
Other food allergies, affecting less than 1 person per 10,000 population, may be considered "rare". [42] The most common food allergy in the US population is a sensitivity to crustacea. [42] Although peanut allergies are notorious for their severity, peanut allergies are not the most common food allergy in adults or children. Severe or life ...
Type I hypersensitivity (or immediate hypersensitivity), in the Gell and Coombs classification of allergic reactions, is an allergic reaction provoked by re-exposure to a specific type of antigen referred to as an allergen. [1]