Have you ever worried that you've forgotten something important, even though you knew everything was really okay? Some people can't stop themselves from checking, or counting, or washing their hands. These are symptoms of obsessive-compulsive disorder (OCD). OCD can leave people feeling helpless and out of control. The lives of millions of kids are affected by mental illness. And yet it's all too common for kids to feel like they are alone with their problems. Whether you're seeking information for family, friends, or yourself, these books help explain the challenges faced by people with mental disorders.