He has since been credited with coining the term "polymorphic light eruption".[27][28]. Polymorphous light eruption: A clinical, photobiologic, and follow-up study of 110 patients. The photo antigen that triggers this response is currently unknown. The rash may consist of small red bumps, larger red patches or even blisters. 2008 Aug;24(4):164-74. doi: 10.1111/j.1600-0781.2008.00365.x. Mayo Clinic. Accurate diagnosis relies on the exclusion of other photosensitive conditions. In patients with a polymorphic light eruption, Tcell function is not suppressed by UV radiation until photo-hardening has taken place. Polymorphous light eruption, also known as "sun allergy" or "sun poisoning" is the most common photosensitivity. PMLE can appear on any part of your body exposed to UV light, although it rarely appears on your face. [2][6] At these areas, there may be feelings of burning[9] and severe itching. It can be mildly to markedly pruritic and general malaise, headache, fever, and nausea can occur in rare cases. Patterson JW. Food and Drug Administration. Gruber-Wackernagel A, et al. This condition causes a red, itchy rash to form soon after you've been in the sun or exposed to artificial UV rays. Polymorphous light eruption - Wikipedia Dummer R, Ivanova K, Scheidegger EP, Burg G. Dermatology. Its most pronounced during the spring and early summer. [4]Neutrophils may be seen in early lesions. The cause of polymorphic light eruption is unknown. Despite the fact that polymorphous light eruption (PLE) is the most common photodermatosis, affecting 15% of healthy people in the UK, its pathogeny remains unclear. Polymorphous light eruption is the most common idiopathic photosensitivity reaction. Juvenile spring eruption of the ears Is likely a form of PMLE. [10], Fever, fatigue and headaches have been previously associated with the eruption, but are rare. While the rash varies from person to person, the particular rash you get will typically be similar every time it happens. Lupus Lupus will also show a superficial and deep dermatitis but there is also often basement membrane thickening and dermal mucin. Polymorphous light eruption (PMLE) is a common skin rash that develops after exposure to ultraviolet (UV) light. Epub 2016 Feb 25. Learning Point. [1]. It is generally itchy and uncomfortable. All rights reserved. Management requires determining what provokes the eruption and then attempting to minimize this, while at the same timegradually increasing exposure to induce hardening. In some cases, a doctor might expose a small part of your skin to UV light in order to confirm PMLE. Emergency Nurse.
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