Investigate the severity of acne vulgaris and identify the bacteria in the pustule

Acne vulgaris is an inflammatory disease of the pilosebaceous unit, especially in adolescents. There are many classifications of the disease severity, and the role of bacteria in the pathogenesis has been confirmed. This article evaluates the severity of acne through the Global Acne Grading System and Investigator’s Global Assessment, and the presence of bacteria in the pustule.