Regular acne (acne vulgaris) usually affects the face during puberty, but during adulthood, can also affect other parts of the body such as back, chest and arms. Acne is an inflammation of the skin, caused by changes in the skin structures of the hair follicle and its associated sebaceous gland. Acne is considered an abnormal response to normal levels of the male hormone testosterone. Secreted oils from the sebaceous glands combine with naturally occurring dead skin cells and block the hair follicles, providing a perfect environment for the skin bacteria Propionibacterium acnes to multiply uncontrollably. As a result, the affected skin area becomes inflamed, producing the visible acne lesion.

Many men and women suffer from body acne which usually affects the shoulders, back or chest. It is often aggravated by hot, humid weather, tight fitting clothes or frequent work-outs in the gym. Even just shaving arms, legs, back or chest can result in clogged hair follicles and ingrown hairs, causing acne.

Unlike regular acne of the face, what you eat does not appear to have a significant effect on the formation of back acne or body acne. What does seem to play a role in the formation of body acne or back acne in adulthood, is the effect of changes in hormone levels. Even stress can influence a person's hormone levels.

Light to moderate cases of back and body acne can usually be treated with over-the-counter topical acne treatments, which contain either benzoyl peroxide or salicylic acid in either a gel or cream base. For more severe cases of acne, including acne that results in cysts, one should always consult a dermatologist for treatment to prevent damage to the skin.

Disclaimer: the information provided is for educational purposes only and is in no way intended to replace the advice from your health care professional. Always talk to your health care professional.