ADHD means Attention Deficient Hyperactivity Disorder. It is a medical disorder that generally affects children and teenagers, and it may continue into adulthood. The main symptoms of ADHD are lack of attention, forgetfulness, and hyperactive, impulsive behavior. These symptoms are evident before the age of 12, and some children exhibit symptoms as early as three years.
The symptoms of ADHD can be mild, moderate, or extremely severe. ADHD may continue to adulthood, but the symptoms may vary. Symptoms of ADHD may become fewer as affected children grow older. In adults, the symptoms of ADHD include restlessness, forgetfulness, difficulty paying attention, problem focusing on the task, poor planning, mood swings, disorganization, and impulsiveness.