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acne vulgaris acne vul·gar·is (vŭl-gâr'ĭs)
An inflammatory eruption affecting the face, upper back, and chest, consisting of blackheads, cysts, papules, and pustules, and occurring primarily during puberty and adolescence.
acne ac·ne (āk'nē)
An inflammatory disease of the sebaceous glands and hair follicles of the skin that is marked by the eruption of pimples or pustules, especially on the face.