![](https://lms.su.edu.pk/storage/uploads/1587321887-acne-vulgaris.jpg)
Acne vulgaris
Acne vulgaris is the formation of comedones, papules, pustules, nodules, and/or cysts as a result of obstruction and inflammation of pilosebaceous units (hair follicles and their accompanying sebaceous gland). Acne develops on the face and upper trunk. It most often affects adolescents