When most people think of acne, they think of it occurring on the face. But acne is also occur on the back and chest, and is often more difficult to treat when found on these areas. The back is also in constant contact with clothing and other materials that might irritate the skin, which can further aggravate the condition. Acne is caused from excess oils on the skin that build up and form lesions called pimples. Acne prevention is the best...