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November 1977

Clarification of Lichen Planus Actinicus-Reply

Arch Dermatol. 1977;113(11):1615. doi:10.1001/archderm.1977.01640110135046

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In Reply.—  When we call a lesion "actinic," as in actinic keratotis, we imply that the lesion is caused by the sun. If the sun was one of many factors that caused a condition, we cannot call that condition actinic.In lichen planus subtropicus, there are other factors that play a role in its origin besides the sun. These factors include heat, nutritional deficiencies, and genetic predisposition. Lichen planus actinicus is an existing clinical variety of lichen planus that usually follows a sunburn and is considered as a Koebner's reaction; the name "lichen planus actinicus" should be restricted to this variety of the disorder only.

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