Attention-deficit/hyperactivity disorder (ADHD) is also known as hyperactivity or attention deficit disorder (ADD). ADHD is a common condition that affects children and adolescents, while ADD is more common in adults.
The National Institute of Mental Health (NIMH) estimates that 3% to 5% of children have ADHD. Some experts, though, say ADHD may occurs in 8% to 10% of school age children. Experts also question whether kids really outgrow ADHD. What that means is that this disorder may be more common in adults than previously thought.
Children with ADHD generally have problems paying attention or concentrating. They can't seem to follow directions and are easily bored or frustrated with tasks. They also tend to move constantly and are impulsive, not stopping to think before they act. These behaviors are generally common in children. But they occur more often than usual and are more severe in a child with ADHD.
