TY - CHAP M1 - Book, Section TI - Acne Vulgaris A1 - Shinkai, Kanade A1 - Fox, Lindy P. A2 - Papadakis, Maxine A. A2 - McPhee, Stephen J. A2 - Rabow, Michael W. A2 - McQuaid, Kenneth R. Y1 - 2022 N1 - T2 - Current Medical Diagnosis & Treatment 2022 AB - ESSENTIALS OF DIAGNOSISAlmost universal in puberty; may begin in premenarchal girls and present or persist into the fourth or fifth decade.Comedones are the hallmark. Severity varies from comedonal to papular or pustular inflammatory acne to cysts or nodules.Face, neck, and upper trunk may be affected.Scarring may be a sequela of the disease or picking by the patient. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1188115038 ER -