Attention-Deficit / Hyperactivity Disorder (ADHD)
ADHD is one of the most common behavioral disorders of childhood. It is usually diagnosed in childhood and often lasts into adulthood. It is thought to involve biological substances in the brain, called neurotransmitters, as well as certain regions of the brain. As such, it affects behavior, emotions, and learning. Children with ADHD may experience difficulty sustaining attention and controlling their behavior, as well as over-activity. ADHD is estimated to occur in 3-7% of the population, and it occurs more frequently in boys than girls. There are three subtypes for this disorder: Primarily Inattentive Type, Predominantly Hyperactive-Impulsive Type, and Combined Type (showing significant symptoms of inattention, hyperactivity and impulsivity).