Acne occurs more frequently in newborns and infants than one would gat
her from written accounts. Acne neonatorum tends to be overlooked beca
use it is usually minor and transient. In contrast, acne infantum, whi
ch generally does not make its appearance until after 3 months of life
, is more serious. Even acne conglobata may develop in infants. There
are many other types of acne in childhood reflecting different pathoge
netic mechanisms; included in this group are acne venenata infantum, s
teroid acne, hormonal disturbances, and toxic reactions.