Journal of the American Academy of Dermatology
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J. Am. Acad. Dermatol. · Dec 1996
ReviewDrug photosensitivity, idiopathic photodermatoses, and sunscreens.
Photosensitization may be defined as a process in which a reaction to normally innocuous radiation is induced by the introduction of a specific radiation-absorbing substance (the photosensitizer) that causes another component (the substrate) to be changed by the radiation. This review focuses on photosensitization produced by exogenous chemicals. ⋯ Clinical recognition patterns of the photodermatoses are stressed as well as several diagnostic procedures available for confirmation of the condition. Finally, descriptions, therapeutic uses, and adverse reactions of sunscreens are provided.
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J. Am. Acad. Dermatol. · Dec 1996
Chronic telogen effluvium: increased scalp hair shedding in middle-aged women.
Diffuse loss of scalp hair is a common problem in middle-aged women. A segment of these cases represents idiopathic chronic telogen effluvium (CTE). ⋯ CTE, which usually affects 30- to 60-year-old women, starts abruptly with or without a recognizable initiating factor. It may be distinguished from classic acute telogen effluvium by its long fluctuating course and from AGA by its clinical and histologic findings.