A common skin condition seen both in teens and adults, acne presents itself as blackheads, whiteheads, pimples, zits, papules, scaly red skin and skin scarring. Acne is seen due to over activity of the sebaceous glands. When these glands make too much oil, the pores on our skin get plugged and blocked with oil, dead skin and bacteria. These clogged pores swell, look lumpy and red giving us pimples and zits. We generally see acne on the face, the upper part of the chest and the back.