Acne vulgaris is an extremely common condition affecting more than 80-90% of

adolescents and young adults (1,2). It typically starts in late childhood or early teens, but

onset may be delayed in some people well into their 20s and 30s (3). The incidence rate of

acne is roughly the same in males and females but, males tend to have more serious

conditions (4). Even later in adulthood, roughly 25% of adult men and 50% of adult

women can have acne at some time in their adult lives.