Once the pimples heals may leave mark/scar. Close inspection of acne skin can reveal some scarring in up to 90% of individuals . But significant scarring occurs in 22%. Scars may show increased collagen (hypertrophic scars and keloids) or be associated with loss of collagen (i.e. ice-pick scars, depressed fibrotic scars, atrophic macules and perifollicular elastolysis).Ice-pick scars are self-explanatory, and are most evident on the cheeks. Post inflammatory pigmentation is known as pimple marks. A common feature of darkly pigmented skin is the relatively persistent marks, which may be more disabling than the original disease. Many people are worried about these consequences.
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