ADHD Hyperactive-Impulsive Type: Symptoms, Causes, and Treatment Your child can't sit still. He's talking a mile a minute. Is he just a high-energy kid? Or does he have ADHD?

Hyperactivity is just one sign of ADHD. Kids who have it seem to always be on the move.

Kids who are hyperactive also tend to be impulsive. They may interrupt conversations. They may play out of turn.

So how do you know whether your child has hyperactive-impulsive ADHD? And if your child does, what treatments can help?

ADHD in Children Slideshow