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start:medicine:diseases:adhd

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Attention-Deficit / Hyperactivity Disorder (ADHD)

Attention deficit hyperactivity disorder (ADHD) is a mental disorder of the neurodevelopmental type. It is characterized by problems paying attention, excessive activity, or difficulty controlling behavior which is not appropriate for a person's age. These symptoms begin by age six to twelve, are present for more than six months, and cause problems in at least two settings (such as school, home, or recreational activities). In children, problems paying attention may result in poor school performance.

Causes are as yet unknown, but genetic, environmental and societal factors are known to affect its prevalence.

Source: Wikipedia

“Scientists are studying cause(s) and risk factors in an effort to find better ways to manage and reduce the chances of a person having ADHD. The cause(s) and risk factors for ADHD are unknown, but current research shows that genetics plays an important role.”

Source: US Centers for Disease Control and Prevention

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