Acne is a skin condition that causes whiteheads, blackheads, and inflamed red growths (papules, pustules, and cysts) to form. These growths are commonly called pimples or "zits."
Acne vulgaris; Cystic acne; Pimples; Zits
Acne occurs when tiny holes on the surface of the skin, called pores, become clogged.
Source: ADAM Encyclopedia
Whiteheads are white, raised bumps caused by collections of oil and skin in pores. Whiteheads are also known as closed comedomes and pimples. See:... Read more »