Acne vulgaris (commonly called acne) is a common skin condition, caused by changes in the pilosebaceous units, skin structures consisting of a hair follicle and its associated sebaceous gland via androgen stimulation. It is characterized by whiteheads, blackheads, and inflamed red pimples or "zits".

Symptom severities
Severe 23
Moderate 60
Mild 91
None 51
Last updated: