It is not known if acne, a common skin condition characterized by the appearance of pimples, was present in prehistoric times. There is no direct evidence one way or the other, and it is difficult to say for certain what the prevalence of acne might have been among ancient peoples.
Acne is thought to be caused by a variety of factors, including hormones, genetics, and certain aspects of lifestyle and environment. It is possible that some of these factors, such as hormones and genetics, have been present in human populations for a long time. However, it is also likely that other factors, such as diet, pollution, and stress, are more closely related to modern lifestyles and environments. It is difficult to say for certain how these factors may have affected the prevalence of acne in ancient times.