Acne is a common skin condition that will affect most people at some point in their lives. It is most commonly seen in adolescence as part of several visible signs of the hormonal surge that occurs with the onset of puberty. Less well known is its presentation during the neonatal period, infancy, and childhood, which can lead to significant parental distress.

Neonatal acne is a benign eruption that self-resolves without sequelae often requiring no treatment whereas infantile acne often requires treatment. Childhood acne is rare and should prompt investigation for causes of hyperandrogenism. Periorificial dermatitis, a rosacea-like condition, has a typical appearance and distribution and responds well to topical or systemic treatments. These forms of acne will be detailed in this chapter. Chapter 12: Acne and Related Disorders discusses the presentation and treatment of common adolescent acne, also called acne vulgaris.