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. The second and subsequent exposures produce photoallergic skin conditions which are often eczematous. It is distinct from sunburn.
Photodermatitis may result in swelling, difficulty breathing, a burning sensation, a red itchy rash sometimes resembling small blisters, and peeling of the skin. Nausea may also occur. There may also be blotches where the itching may persist for long periods of time. In these areas an unsightly orange to brown tint may form, usually near or on the face.
Causesedit
Many medications and conditions can cause sun sensitivity, including:
Sulfa used in some drugs, among them some antibiotics, diuretics, COX-2 inhibitors, and diabetes drugs.[1]
Prevention includes avoiding exposure to chemicals that can trigger the reaction, such as by wearing gloves, or avoiding sunlight or wearing sunscreen[3][4] preferably with at least factor 30 and with a high UVA protection level on the affected area. And by addressing any risk factors, such as those listed above.
^Rodriguez E, Valbuena MC, Rey M, Porras de Quintana L. 2006. Causal agents of photoallergic contact dermatitis diagnosed in the national institute of dermatology of Colombia. Photodermatol Photoimmunol Photomed 22(4): 189-192.
^. Archived from the original on 2014-07-21. Retrieved 2011-04-26.
External linksedit
March 04, 2024
photodermatitis, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, july, 2022. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Photodermatitis news newspapers books scholar JSTOR July 2022 Learn how and when to remove this template message 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 The second and subsequent exposures produce photoallergic skin conditions which are often eczematous It is distinct from sunburn Sun poisoningA case of photodermatitis as a result of lemonsSpecialtyDermatology immunology Contents 1 Signs and symptoms 2 Causes 3 Prevention 4 See also 5 References 6 External linksSigns and symptoms editPhotodermatitis may result in swelling difficulty breathing a burning sensation a red itchy rash sometimes resembling small blisters and peeling of the skin Nausea may also occur There may also be blotches where the itching may persist for long periods of time In these areas an unsightly orange to brown tint may form usually near or on the face Causes editMany medications and conditions can cause sun sensitivity including Sulfa used in some drugs among them some antibiotics diuretics COX 2 inhibitors and diabetes drugs 1 Psoralens coal tars photo active dyes eosin acridine orange Musk ambrette methylcoumarin lemon oil may be present in fragrances PABA found in sunscreens Oxybenzone UVA and UVB chemical blocker also in sunscreens 2 Salicylanilide found in industrial cleaners St John s wort Hexachlorophene found in some prescription antibacterial soaps Tetracycline antibiotics e g tetracycline doxycycline minocycline Benzoyl peroxide Retinoids e g isotretinoin Some NSAIDs e g ibuprofen naproxen sodium Fluoroquinolone antibiotic Sparfloxacin in 2 of cases Amiodarone used to treat atrial fibrillation Pellagra Vitamin B3 deficiency Photodermatitis can also be caused by plants such as Ammi majus parsnip giant hogweed Heracleum mantegazzianum common rue Ruta graveolens and Dictamnus a genus of flowering plants in the family Rutaceae with a single species Dictamnus albus commonly called the burning bush Photodermatitis caused by plants is called phytophotodermatitis Prevention editPrevention includes avoiding exposure to chemicals that can trigger the reaction such as by wearing gloves or avoiding sunlight or wearing sunscreen 3 4 preferably with at least factor 30 and with a high UVA protection level on the affected area And by addressing any risk factors such as those listed above See also editPhytophotodermatitis Photosensitivity Solar urticariaReferences edit Sulfa Allergy Symptoms and Risks Rodriguez E Valbuena MC Rey M Porras de Quintana L 2006 Causal agents of photoallergic contact dermatitis diagnosed in the national institute of dermatology of Colombia Photodermatol Photoimmunol Photomed 22 4 189 192 Archived AAD The Sun and Your Skin Allergic Reactions section AAD Sunscreens Archived from the original on 2014 07 21 Retrieved 2011 04 26 External links edit Retrieved from https en wikipedia org w index php title Photodermatitis amp oldid 1200098935, wikipedia, wiki, book, books, library,
