Attention Deficit Hyperactivity Disorder (ADHD) is a behavioral disorder characterized by:
- Inattention – unable to sustain focus
- Hyperactivity – constantly moving or being too fidgety
- Impulsivity – doing reckless, spur-of-the-moment things without thinking about the consequences
Most cases of ADHD are diagnosed between the ages of 6 and 12. The symptoms of ADHD usually settle with age; however, they can persist into adulthood. ADHD can also develop in adulthood in people who did not experience symptoms in early life.