Acne vulgaris is a common cutaneous disease, characterized by skin areas with hyper seborrhea, comedones, papules, pustules, nodules and possibly scarring. Acne affects mostly skin with the densest population of sebaceous follicles; like the face, the upper part of the chest, and the back.
Severe acne is characterized by changes in pilosebaceous units, and sebaceous gland, due to androgenic stimulation, with inflammatory or non inflammatory patterns, causing important scarring. Acne scars are the result of inflammation and uncontrolled wound healing. Their aspect can be depressed or thickened (keloid), and their presence is associated with reduce self-esteem and social avoidance conducts.
Prompt treatment is recommended through CO2 fractional laser and subcision, that stimulates collagen and elastin neoformation and release fibrotic skin retractions to level skin surface. Occasional intralesional steroid injections are recommended over hypertrophic scars.