Attention deficit hyperactivity disorder (ADHD) is a condition characterized by inattention, hyperactivity and impulsivity.
ADHD is associated with abnormally low levels of the neurotransmitters (brain "messengers") that send information between two parts of the brain associated with pleasure/reward, mood and complex behaviors, the prefrontal cortical area and the basal ganglia (i.e. dopamine and noradrenaline).
While some behaviors associated with ADHD are "normal" and not a cause for concern to most people, someone with ADHD will have trouble controlling these behaviors and will show them persistently for an extended period of time.
Signs of inattention include:
Signs of hyperactivity include:
Signs of impulsivity include:
ADHD symptoms can appear as early as the preschool years.
A child who finds it nearly impossible to stay focused in class, or to complete a lengthy task such as writing a long essay, may try to save face by acting as though he is too lazy to finish. This behavior may look on the outside like laziness or lack of motivation, but in reality it stems from a considerable difficulty in functioning.
ADHD is managed and treated in several ways:
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