A scar is a result of biological wound repair process of the skin, which we generally unwelcome. Wound repair is a normal healing process of the skin that results to annoying dark spots or raised marks.
Acne scars are formed from damaged dermis and are basically the product of an inflamed lesion, such as a papule, pustule, or cyst. Inflamed acne occurs when a follicle becomes swollen with clogged oil, dead skin cells, and bacteria. An inflamed follicle causes a break in the tissues which later formed into scars in the skin.
When the skin is damaged, the skin produces new collagen to repair the injured tissues. Collagen is produce to give the skin strength and flexibility from being injured. However, the end result is not as flawless and smooth as its original texture.
During the healing process, the skin produces excess collagen to help in the skin repair. Too much collagen forms a mass of raised tissue on the skin's surface. It appears as red raised lump which commonly occur within 4 to 8 weeks after an infected skin injuries.
One serious type of excessive scarring is known as Keloid scars since it can grow into large, benign tumorous neoplasms. Keloid scars are common for dark skinned people, but can occur on anyone. It can be very itchy or painful sometimes, but it is completely harmless and non-cancerous.
One type of acne looks sunken, pitted appearance on the surface of the skin, which is known as atrophic scars. Due to the loss of underlying fat or muscles supporting the skin, scars appear depressed. This type of scarring is commonly related with chickenpox, acne, skin infections, surgery, or accidents.
Striae or stretch marks are another form of scars which are generally caused by rapid skin stretching or when the skin is pressured during the healing process. This is commonly associated during pregnancy, significant weight gain, or adolescent growth spurts.
Inflammation has the greatest impact on the development of scars. Inflamed wounds or deep breaks on the skin have the more likelihood for scarring to transpire. Sometimes, post-inflammatory hyperpigmentation (PIH) can be mistaken as scar, but this is a temporary discoloration of the skin which will eventually fade as time goes by. Retin A is the medication of choice to speed up fading time.
Even with the most definite treatment, acne scars may still develop. So, it is best to reduce inflammatory breakout as much as possible; visiting your dermatologist will be very helpful.