Acne is a form of skin disorder that is typically transpiring on young adults, during the adolescent period. Such skin problem can arise due to several factors including genes, free radicals and unhealthy habits. If improperly treated or untreated at all, acne can leave scars behind or even can lead to a more serious skin disorder.

The formation of acne scars may differ from how the skin cells react to a dynamic acne inflammation. Acne scars are caused by either excessive increase or loss of skin tissues.

Four Common Types of Acne Scars

1. Ice Pick scars - These are the widespread acne scars formed from the trouncing of skin tissues. The name implies the scar formation, which gives an appearance of a skin that is seemed to be perforated with an ice pick. Early acne treatments can prevent this scar from forming later.

2. Keyloid scars - If ice pick scars are caused by loss of skin tissues, keyloid scars, conversely emerged from excessive development of skin tissues. The main trigger of keyloid scars formation is the excessive secretion of collagen by the cells, which would appear as supple, rigid and uneven figure.

3. Rolling scars - Rolling scars are caused by skin surface adhesion. This happens when the active acne creates a linkage in the skin stratum called subcutaneous layers. 

4. Boxcar scars - Boxcar scars are quite similar to ice pick scars, yet they are not pointed, but rather round or oval pockmarks. Boxcar scars may differ in profundity.