Adult ADHD

About half of adults with it are not diagnosed until age 18 or older. Experts are debating whether it's being under- or overdiagnosed, and trying to establish better ways to assess and treat it in adults.

Six questions like "How often do you procrastinate?" can help doctors identify adults with ADHD, researchers say. They estimate that the disorder impairs daily functions for about 8 percent of adults.

Attention deficit hyperactivity disorder is most commonly diagnosed in children. But older adults may find that what they had worried was early dementia is actually ADHD.