Photoallergy 509799 203025208 2008-04-03T11:59:46Z Jfdwolff 46555 undoing redirect - the present content does define the very narrow concept of allergy (type 1 hypersensitivity) to molecules activated by light '''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 [[eczema]]tous. ==See also== *[[Photodermatitis]] ==External links== *[http://www.aad.org/public/Publications/pamphlets/SunandSkin.htm American Academy of Dermatology - The Sun and Your Skin] {{Merge|photodermatitis|date=August 2007}} [[Category:Dermatology]] {{dermatology-stub}} [[de:Lichtallergie]] [[es:Fotoalergia]] [[nl:Fotocontactallergie]]