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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.
Allergic rashes, like a drug rash, occur when you ingest an allergen, including certain foods, such as peanut allergies, or medications. And viral infections, like coronavirus, can also result in ...
Phytophotodermatitis, also known as berloque dermatitis, [1] [2] [3] margarita photodermatitis, [4] [5] lime disease [6] or lime phytodermatitis [6] is a cutaneous phototoxic inflammatory reaction resulting from contact with a light-sensitizing botanical agent (such as lime juice) followed by exposure to ultraviolet A (UV-A) light (from the sun, for instance).
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 ...
At the more serious end is Stevens-Johnson syndrome, Hu says, which starts with flu-like symptoms and a blistering, painful rash. The rash also typically spreads quickly, the Mayo Clinic says.
woman showing her skin itching behind , with allergy rash urticaria symptoms (chokja / Getty Images stock) Diagnosing hives. To diagnose hives, your primary care provider or dermatologist will ...
Further episodes of the irritable rash occur several hours to days following subsequent sun exposure. [11] PLE appears on areas of the skin newly exposed to sunlight such as the visible part of the neckline, backs of hands, arms and legs, and feet, but less commonly the face. [2] [6] At these areas, there may be feelings of burning [9] and ...
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]