Abstract
Acne is a common skin inflammatory condition that can significantly affect the patient's quality of life. Therefore, accurate assessment scales are very important for treatment and management of acne vulgaris. This review article issues a comprehensive review of various acne severity assessment scales. In this text, the authors review the acne grading scales, such as the Pillsbury scale, Cook's acne grading scale, Leeds acne grading system, Global Acne Grading System, and investigator's global assessment, etc. And we delve into the characteristics, advantages, limitations, and applicability of these scales. The acne grading scale to be developed in the future should be objective, accurate, comprehensive, easy to use, and applicable in a variety of clinics and research settings. Current technologies, such as artificial intelligence, could potentially contribute to the development of ideal acne grading scales that meet unmet needs.