title: [Solar acne].
abstract: Acne solaris a form of acne that appears and relapses after sun exposure, is almost always itchy and is preferably localized on the upper anterior chest, the deltoid regions and the shoulders. The use of greasy or oily sun protectors helps in the obstructions of the follicular openings, which is seen in the tissue sections, presumably initiated by sun irradiation causing initially hyperkeratosis. The essential lesion is a small hemispheric or conic erythematous papule which may show a yellow point in its top. True comedos are not seen and compression after punction provokes the appearance of a yellow mass-essentially keratinic and sebaceous. The usual treatment of acne vulgaris is useful specially if a topical corticosteroid is associated. The systemic use of corticosteroids usually worsens the disease.
mesh_terms: D000152:Acne Vulgaris / Q000139:chemically induced / Q000209:etiology* / Q000473:pathology; D000293:Adolescent; D000328:Adult; D007644:Darier Disease / Q000139:chemically induced / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012867:Skin / Q000473:pathology; D013472:Sunlight; D013473:Sunscreening Agents / Q000009:adverse effects
chemical_list: D013473:Sunscreening Agents
vernacular_title: Acne solar.