I was recently sitting with a group of friends who, like me, all have teenagers. Through our discussion it became clear that we had some things in common: We had all experienced the ups and downs of parenting when our kids were little, from the sleepless nights with a...

There are few things more disturbing for moms and dads than finding out that your child is intentionally hurting herself. Unfortunately, it's very common, especially among girls. Experts call it "self-injury," and as many as a quarter of all teenagers do it. The most...