Practice CMAJ Clinical images Infantile acne Michael Samycia MD, Joseph M. Lam MD Competing interests: None previously healthy four-month-old boy Infantile acne has a similar lesion distribu- declared. presented with a one-month history of tion and male predominance but includes come- This article has been peer A recurrent pustules, erythematous nod- dones, nodules and cysts. In rare instances in reviewed. ules and comedones on his cheeks. Physical which infantile acne is severe and persistent, or The authors have obtained examination did not show any signs of viril- when additional signs of virilization are noted, patient consent. ization. Based on the child’s age and lesion underlying endocrinopathies must be consid- 2,3 Affiliations: Department morphology, a diagnosis of infantile acne was ered. It presents later (age 3–16 mo) and is of Dermatology and Skin made. After discussion with the family, an much less common, affecting less than 2% of Science (Samycia, Lam), expectant approach was agreed upon. children.2,3 Infantile acne may persist for one to Department of Pediatrics (Lam), University of British Pediatric acne can be divided into five sub- two years and has been linked to an increased 1 Columbia, Vancouver, BC groups: neonatal, infantile, midchildhood, pread- incidence and severity of adolescent acne. olescent and adolescent. Neonatal acne is com- All cases of acne presenting in midchildhood Correspondence to: Michael Samycia, mon, affecting 20% of infants younger than six (age one to seven years) should be investigated
[email protected] weeks.1 It is an inflammatory response to the for hyperandrogenism.1,2,4 CMAJ 2016.