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Solar urticaria is an immunoglobulin E-mediated hypersensitivity that can be introduced through primary or secondary factors, or induced by exogenous photosensitization. [15] [16] Primary SU is believed to be a type I hypersensitivity (a mild to severe reaction to an antigen including anaphylaxis) in which an antigen, or substance provoking an immune response, is "induced by UV or visible ...
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 ]
Imagine if sitting in the sun could cause you to you to get itchy red patches on your skin, your blood pressure to drop to dangerous levels, and give you difficultly breathing?
Urticaria is a vascular reaction of the skin characterized by the appearance of wheals, which are firm, elevated swellings of the skin. [105] Angioedema , which can occur alone or with urticaria, is characterized by a well-defined, edematous swelling that involves subcutaneous tissues, abdominal organs, or upper airway.
UV is also the main factor in a condition called solar urticaria, hives triggered by sun exposure—something Rosemary G. Dietrich, 45, has dealt with for the last decade and a half.
Other similar appearing conditions are solar urticaria, which has a shorter duration, the eczema-like condition, photosensitive dermatitis, [2] and photosensitivity drug reaction. [9] Prickly heat, which is caused by warm weather or heat is not the same as PLE. [5] Photosensitivity is also found in some of the porphyrias.
Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure.
Doctors diagnosed her with aquagenic urticaria - a condition so rare that are only 50 known. If you think that peanut allergies are a pain, wait until you hear about this girl. 17-year-old ...