Acne

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.[1] Acne lesions are commonly
referred to as pimples, spots, or zits.