[Therapy of acne scars].

Acne scarring is common but difficult to treat. A descriptive, universally acceptable classification system of atrophic acne scars includes three scar types: icepick, boxcar, and rolling. Erythema and, less often, pigmentary changes may be associated. Once the scar type has been defined, appropriate treatment regimens can be offered. It is important to emphasize to the patient that acne scars can be improved by a variety of medical or surgical methods but never entirely reversed.