The pimples, pustules (PUSS-chools), and occasional scars of acne (ACK-nee) happen mainly during the teen years, although it can extend into adulthood.

The teenage years are among the most difficult, especially when it comes to formulating and maintaining a positive self-image. Try not to compare yourself to people you see on T-V or in the movies, or even your peers.

If you're a teenager who's dating, it's important that you're aware of sexual assault and date rape. Of course, these are unpleasant topics, but it's important that both young men and young women have respect for members of the opposite sex and, at the same time, know how to protect themselves if danger arises.

Getting your period for the first time, also known as menstruation (men-STRAY-shun), is the first step in your body preparing you to become a mother some day.