Acne scarring refers to lasting marks or indentations on the skin resulting from severe or persistent acne. It often occurs when individuals squeeze pimples or pick at scabs, leading to permanent skin damage. The scars can take various forms, and the appropriate treatment depends on the severity of scarring and individual concerns. The types of acne scarring include ​enlarged pores, red marks from active and previous acne, pigmentation, mild indentation, pitted scarring, and ice pick scarring.