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CES Medicina

versão impressa ISSN 0120-8705

Resumo

MORALES, Nathalie et al. Photodermatosis and desensitization therapy. CES Med. [online]. 2012, vol.26, n.1, pp.29-41. ISSN 0120-8705.

Photodermatoses are a group of skin disorders caused or aggravated by ultraviolet radiation or visible light. They are divided in four groups: I, immunologically mediated photodermatoses (previously called idiopathic); II, drug- and chemical- induced photosensitivity; III, defective DNA repair disorders; and IV, photoaggravated dermatoses. To reach the correct diagnosis of these pathologies is necessary to make an appropriate clinical approach supported by a comprehensive interview and physical examination as well as specialized tests like photopatch and phototest. This review is a compilation of the epidemiological, clinical, diagnosis and treatment of immunologically mediated photodermatoses, with greater focus on desensitization therapy with ultraviolet light (PUVA, UVA and UVB), which has shown positive results in this pathologies, being UVB preferred by most authors except in solar urticaria, in which PUVA has displayed better results than UVB in the long term. Firstable, is essential to determine the minimal erythema dose and minimal urticarial dose for solar urticaria. The main disadvantages of photodesensitization therapy is the short therm effects and requirement of maintenance therapy to reach lasting control of disease with the risk of carcinogenesis of UVL. Further, there are few trials that study efficacy and security of desensitization phototherapy and some of these include small sample of patients corroborate this information

Palavras-chave : Photodermatosis; immunologically mediate; Desensitization therapy Review.

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