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Hypersensitivity (also called hypersensitivity reaction or intolerance) is an abnormal physiological condition in which there is an undesirable and adverse immune response to antigen. It is an abnormality in the immune system that causes immune diseases including allergies and autoimmunity.
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] Type I is distinct from type II, type III and type IV hypersensitivities.
Electromagnetic hypersensitivity. Idiopathic environmental intolerance attributed to electromagnetic fields (IEI-EMF), Electrohypersensitivity (EHS), Electro-sensitivity, Electrical sensitivity (ES), Wi-Fi allergy. Pseudomedical diagnosis.
Is it a food allergy, sensitivity or intolerance? Here's how to tell, according to experts.
Aspirin-exacerbated respiratory disease (AERD), also called NSAID-exacerbated respiratory disease (N-ERD) or historically aspirin-induced asthma and Samter's Triad, is a long-term disease defined by three simultaneous symptoms: asthma, chronic rhinosinusitis with nasal polyps, and intolerance of aspirin and other nonsteroidal anti-inflammatory ...
Allergic contact dermatitis. Illustration of allergic contact dermatitis. Specialty. Dermatology, immunology. Allergic contact dermatitis ( ACD) is a form of contact dermatitis that is the manifestation of an allergic response caused by contact with a substance; the other type being irritant contact dermatitis (ICD).
Credit - Lon Tweeten for TIME; Getty Images. W hen Dr. Gailen Marshall was training to become a physician, he was taught that allergies were a kid thing. “Back in the day, the allergist’s ...
Sucrose intolerance can also be caused by irritable bowel syndrome, aging, or small intestine disease (secondary sucrose intolerance). There are specific tests used to help determine if a person has sucrose intolerance. The most accurate test is the enzyme activity determination, which is done by biopsying the small intestine.
More differences between pink eye vs. allergies are: Allergies typically affect both eyes at once, while pink eye typically starts in one eye before spreading to infect both eyes.
Immunology. Oral allergy syndrome ( OAS) or pollen-food allergy syndrome (PFAS) is a type of allergy classified by a cluster of allergic reactions in the mouth and throat in response to eating certain (usually fresh) fruits, nuts, and vegetables. It typically develops in adults with hay fever. [1]