Acne scars develop in areas where former cystic blemish lesions have been present and take on a “volcanic crater” shape. Physical acne scars are sometimes referred to as “Icepick” scars. This is because the scars tend to cause an indentation in the skin’s surface. Acne scarring can be very moderate and localized to very significant and come in three varieties:
- Atrophic, which are mostly shallow
- Ice pick-shaped, which are narrow and deeper.
People with deeper skin tones may also notice darkening (or hyperpigmentation) within the scars, while people with lighter skin tones may show redness (or erythema) within the scars.