Acne is a difficult, but treatable condition. Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. It causes whiteheads, blackheads and/or pimples ranging in grades from 1-4; four being the worst condition known as cystic acne. Cystic acne is the most serious type of acne. It develops when cysts form deep underneath your skin. This can result from a combination of bacteria, oil, and dry skin cells that get trapped in yo