What causes the plugged pores that result in acne is a question that scientists and doctors still haven’t been able to completely agree upon. Today, most theories seem to point to a combination of factors that include genetics, hormone changes, and stress. Previously it was believed that diet was a strong component to acne, but most evidence suggests that hormones and stress are more likely to be the culprits.
Almost everyone will have some form of acne in their lives. Most people get acne during their teenage years, associated with the massive hormone changes that occur during puberty. It is equally common to men and women, and usually occurs in facial regions. However, acne can begin or persist at any stage in adult life, and can sometimes occur on the back, neck, arms and legs.