Acne, also known asÂ acneÂ vulgaris, is a long-term skin disease that occurs when hair follicles are clogged with dead skin cells and oil from the skin. It is characterized by blackheads or whiteheads,Â pimples, oily skin, and possibleÂ scarring
TheÂ CauseÂ ofÂ Acne Scarring.Â Acne scarsÂ are most often the product of an inflamed lesion, such as a papule, pustule, or cyst. Inflamed blemishes occur when the follicle, or pore, becomes engorged with excess oil, dead skin cells, and bacteria. … To repair the damage done to the dermis, the skin forms new collagen fibers.