Acne vulgaris (commonly called acne) is a skin disease caused by changes in the pilosebaceous units (skin structures consisting of a hair follicle and its associated sebaceous gland). Severe acne is inflammatory, but acne can also manifest in noninflammatory forms. Acne lesions are commonly referred to as pimples, spots, or zits. ...read more from Wikipedia
- Acne is most common during adolescence, affecting more than 85% of teens.
- Acne develops as a result of blockages in follicles.
- Acne often leaves small scars where the skin gets a "volcanic" shape.
- There are three grading scales for grading the severity of acne: Leeds Acne Grading Technique, Cooks Acne Grading Scale, Pillsbury Scale.