Acne - Causes

Introduction Causes Self-Care Guidelines Treatments

Acne results in a variety of lesions. The most common acne locations include the face, neck, chest, and back, where the most sebaceous glands are located. Along the jaw line is a common location in adults. "Blackheads" (open comedones) and "whiteheads" (closed comedones) are follicular plugs that are either sitting below the skin surface (whitehead) or oxidized from being exposed to the air (blackhead). Papules are small pink to reddish-brown bumps, pustules are pus-filled lesions, and nodules or cysts are deeper pus-filled lesions.

Mild acne consists of a few papules/pustules and/or comedones. Moderate acne has an increased number of lesions. Severe acne has numerous comedones, papules, pustules, and may have painful nodules.

Acne can result in permanent scars, which can appear to be depressions in the skin or hyperpigmentation, which is dark red or brown flat marks where the acne lesions were.