Acne is not just limited to the face. Back acne is also a common affliction. Most often, acne starts on the face then progresses to other parts of the body, the back being a common location.

Back acne is caused by the same factors that cause facial acne: hyperactive oil glands, a surplus of dead skin cells, or an abundance of acne-causing bacteria. For acne to occur, oil combines with dead skin cells and lodges in skin pores, creating a blockage. Blockages initially become blackheads or whiteheads and then progress, if bacteria are introduced, into infection.
Acne tends to strike the back or chest as the skin on these parts of the body, like the face, have more sebaceous glands per square inch. Sebaceous glands produce sebum, which is a natural body oil produced to lubricate the skin. The excess oil can clog the pores and cause acne.
The majority of the time, people wear clothing that covers the back area. While the clothing itself does not cause acne, the friction caused by the clothing rubbing on the skin may aggravate existing pimples. Clothing or accessories worn against the back, such as purses or backpacks, can rub or apply pressure to the skin, irritating and inflaming breakouts. Encourage students suffering from back acne to carry their books in their arms or in a tote bag rather than in a backpack.

Perspiration is also a known back acne irritant. Be sure to shower frequently – always after physical exertion that makes you sweat. When bathing, be sure not to scrub or rub the skin vigorously. Rubbing creates friction and irritates the acne causing it to flare up. Instead, use a gentle medicated cleanser intended for those with acne. Consult with a dermatologist if you find that your acne is severe, painful or otherwise problematic. A dermatologist can recommend the best back acne treatments for you.