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Two or more of the following symptoms after a likely contact with an allergen: a. Involvement of the skin or mucosa b. Respiratory difficulties c. Low blood pressure d. Gastrointestinal symptoms; Low blood pressure after exposure to a known allergen; Skin involvement may include: hives, itchiness or a swollen tongue among others.
Hives, also known as urticaria, is a kind of skin rash with red and/or flesh-colored, raised, itchy bumps. [1] Hives may burn or sting. [2] The patches of rash may appear on different body parts, [2] with variable duration from minutes to days, and do not leave any long-lasting skin change. [2]
Mosquito saliva contains >30 potentially allergenic proteins. More than 11 of these have been identified in the saliva of the Aedes egypti mosquito. Four such proteins, termed Aed a 1 (an apyrase), Aed 2 (Female-specific protein, D7), Aed 3 (an as yet undefined protein), and Aed a 4 (an α-glucosidase) have been purified as recombinant proteins.
Autoimmune urticaria, also known as chronic autoimmune urticaria, is a type of chronic urticaria characterized by the presence of autoantibodies in the patient's immune system that target the body's own mast cells, leading to episodes of hives (urticaria). [2] [3] This immunologically distinct type of urticaria is considered autoimmune because ...
Cholinergic urticaria may significantly impair quality of life, especially in relation to normal day to day activities. It is caused by an overreaction of the immune system to the release of histamine, mast cells, and other chemicals in response to the small nerve fibers throughout the body due to the increase in body temperature being allergic ...
Although doctors recommend that adults over the age of 18 get at least 7 hours of quality sleep each night, the most recent data suggest that many may face consistent sleep issues, such as ...
Antihistamines are drugs which treat allergic rhinitis, common cold, influenza, and other allergies. [1] Typically, people take antihistamines as an inexpensive, generic (not patented) drug that can be bought without a prescription and provides relief from nasal congestion, sneezing, or hives caused by pollen, dust mites, or animal allergy with few side effects. [1]
Mast cell activation syndrome (MCAS) is a term referring to one of two types of mast cell activation disorder (MCAD); the other type is idiopathic MCAD. [1] MCAS is an immunological condition in which mast cells, a type of white blood cell, inappropriately and excessively release chemical mediators, such as histamine, resulting in a range of chronic symptoms, sometimes including anaphylaxis or ...
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