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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.
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).
Artificial UV light sources from tanning units and phototherapy treatment units can also trigger PLE. About three-quarters of patients acquire PLE after UV-A exposure only, one-tenth after UV-B exposure only, and the rest after a combination of UV-A and UV-B exposure. [6] People vary in the amount of sun exposure needed to trigger the rash. [15]
People can also get rashes or burns after taking certain medications — such as common blood pressure medications — and being out in the sun. In those cases, the rash would appear on parts of ...
That's for old people.'" While skin cancers generally develop after 10 years of sun exposure, Robinson says she's treated patients as young as 15 years old for melanoma - a deadly form of skin cancer.
With sunny summer weather can come new skin rashes, including heat rash and sun poisoning. But some can be severe, so it's important to know the differences.
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 ...
Clinical suspicion of P. aeruginosa folliculitis usually begins with a combination of the rash's appearance and a history of swimming or hot tub use 24-72 hours before the onset of symptoms. The most common locations for the rash include the upper thorax, the axillary folds, the hips and buttocks, and the areolas. Areas covered by bathing suits ...