These are the official statistics, but most adults have had a zit or two in their adult lives. For still unknown reasons, people seem to be struggling with acne into their 20s, 30s, 40s and beyond. Adult acne can cause depression and social anxiety in an adult the same way it can in a teen. This means a case of acne which is stubborn and has held on since adolescence without reprieve. Since acne in a man is normally the same stubborn case of acne he had as a teen, treatment usually remains the same.