Attention deficit hyperactivity disorder

Attention deficit hyperactivity disorder (ADHD) is a developmental disorder. It is characterized primarily by "the co-existence of attentional problems and hyperactivity, with each behavior occurring infrequently alone" and symptoms starting before seven years of age. ADHD is the most commonly studied and diagnosed psychiatric disorder in children, affecting about 3 to 5 percent of children globally and diagnosed in about 2 to 16 percent of schoo... More

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Also known as:

  • ADHD,
  • ADD,
  • AD/HD,
  • Attention deficit disorder

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