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Overview of Attention-deficit Hyperactivity Disorder 
Attention-deficit hyperactivity disorder represents a behavior pattern in children defined by short attention spans and impulsivity, with or without hyperactivity. It is estimated to affect 5 to 10% of school-aged children and blamed for learning disorders.
Causes of Attention-deficit Hyperactivity Disorder
Attention deficit hyperactivity disorder is thought to be a biologically inherited disorder.
Signs and Symptoms of Attention-deficit Hyperactivity Disorder
Symptoms are as follows: squirms, fidgets, unable to stay seated when required to do so, easily distracted, blurts out answers before a question is finished, difficulty waiting turn in games and lines, difficulty following instructions, unable to sustain attention in work or play activities, shifts from one uncompleted project to another, difficulty playing quietly, talks excessively, interrupts or intrudes on others, doesn’t appear to listen, loses items necessary for tasks, and often engages in dangerous activities without considering consequences.
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