Acne is a very common skin condition, so do not worry too much if you have it. It includes getting scaly red skin, blackheads and whiteheads, pimples and sometimes it can leave your skin a bit scarred. The main places you can get acne include your face, the upper part of your chest, and over your back. Acne occurs most commonly during adolescence and quite often does continue into adulthood. In adolescence acne is usually caused by an increase in male sex hornones, and both boys and girls get acne because male sex hormones increase a bit in girls too during puberty. For most people acne goes away over time after you reach your early 20's but alas there is no way to tell when it will disappear completely. Acne does tend to decrease young people's self esteem, because it is not the prettiest thing in the world - BUT, BUT, BUT it can easily be treated, so go and see your chemist and ask them what they would recommend. If one type of treatment does not work, then try another. If you are being really upset by it - go and see your family doctor and get them to recommend something. One way or another you will find something which clears it up - so do not worry too much.