title: Study of idiopathic, exogenous photodermatoses, part II: photobiologic testing.
abstract: The second of this series describes the characteristics of 3 types of photobiologic studies: the light test, the photochallenge test, and the photopatch test. We explain how the tests are carried out, the expected results, and their clinical usefulness in various photodermatoses. These tests are needed before attempting to induce adaptation (skin hardening or light tolerance) in the most debilitating cases.
authors.affiliation: Servicio de Dermatología, Hospital Universitario La Princesa, Madrid, Spain. Electronic address: dargilad@hotmail.com.
authors.forename: D
authors.initials: D
authors.lastname: De Argila
authors.affiliation: Laboratorio de Fotobiología Dermatológica, Centro de Investigaciones Médico-Sanitarias, Departamento de Dermatología, Facultad de Medicina, Universidad de Málaga, Málaga, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Aguilera
authors.affiliation: Servicio de Dermatología, Hospital Universitario La Princesa, Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Sánchez
authors.affiliation: Servicio de Dermatología, Hospital Universitario La Princesa, Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: García-Díez
mesh_terms: D006801:Humans; D008027:Light; D018462:Photobiology; D010787:Photosensitivity Disorders / Q000175:diagnosis*; D012882:Skin Tests / Q000379:methods
keywords: Estudio fotobiológico; Fotodermatosis; Fotoparche; Fotoprovocación; Fototest; Fototolerancia; Light tolerance; Photobiologic testing; Photochallenge; Photodermatoses; Photopatch test; Phototesting