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Keratosis pilaris/Lichen spinulosus Presentation stereotypical Age and sex Adolescents especially, females more than males Distribution of lesions Primarily extensor surfaces Configuration of lesions Circular in lichen spinulosus Arrangement of lesions Keratosis pilaris: discrete, widespread, and symmetric Lichen spinulosus: discrete, equidistant, and in groupings circular Individual lesions Acuminate infundibular papules Course Protracted, usually lifelong Variations clinical […]