Acne occurs most commonly during adolescence, affecting an estimated 80–90% of teenagers in the Western world. Lower rates are reported in some rural societies. In 2010, acne was estimated to affect 650 million people globally making it the 8th most common disease worldwide.
Acne is, affecting over 80% of teenagers (aged 13–18 years) at some point. Estimates of prevalence vary depending on study populations and the method of assessment used. Prevalence of acne in a community sample of 14–16 year olds has been recorded as 50% and it has been estimated that up to 30% of teenagers have acne of sufficient severity to require medical treatment.
Overall incidence of acne is similar in both men and women, and peaks at 17 years of age. The number of adults with acne, including people over 25 years, is increasing; the reasons for which are unclear.