Many people experience some form of acne, particularly during the teen years. Acne occurs as an overproduction of oil from the sebaceous glands, excess bacteria on the skin or an accumulation of dead skin cells. Although acne is common at some point in life, cystic acne occurs less frequently and is much more severe.Cystic acne may have similar causes to acne, although the effects are much different. Cystic acne results in large blemishes that may be several centimeters in size. Cysts form under the surface of the skin, which are fluid-filled pockets that can become inflamed or painful. The condition is more common in males, although anyone may develop it. This type of acne should be treated by a dermatologist.While many types of over-the-counter acne treatments involve cleansing of the sk