Acne is something that we all can recognize. Essentially we see it in two population he teenage individual with acne and more and more commonly in the young woman, who has never had acne as a teen who presents with acne. It's on the face, it's on the trunk. We think of it as two components when we look at it. One is no inflammation - blackheads and whiteheads. The other where there is inflammation - pimples, zits, nodules, cysts. The problem with acne is that it can cause scarring on the skin.