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Attention-deficit hyperactivity disorder
Attention-deficit hyperactivity disorder (ADHD or ADD) is a condition affecting the brain. It affects how people think and act. People with ADHD usually have problems with focusing and remembering what is said or done around them. They may also have extra trouble sitting still or being quiet.
Experts think that throughout the entire world, about one in twenty children (5%) has ADHD. Some countries have more ADHD than others, and not everyone uses the same tests. Psychologists have found more people with ADHD in North America than in Africa and the Middle East. In the United States, about one in every fourteen children has ADHD (7%), including one in every ten boys (10%) and one in every twenty-five girls (4%). This could be because more boys get ADHD, or because fewer girls take ADHD tests.
ADHD is most common in children, but many adults have ADHD, too. A little less than half of children with ADHD get better when they become adults.
Most people who have ADHD also have other mental disorders, most often oppositional defiant disorder, conduct disorder, dyslexia, Tourette syndrome, anxiety disorders (especially obsessive-compulsive disorder), mood disorders, substance use disorders, eating disorders and personality disorders (especially antisocial, borderline, histrionic, passive-aggressive and avoidant).
Signs and symptoms
- They can get distracted easily when listening
- They can have difficulty when focusing
- They can get bored after a few minutes unless it's something they enjoy
- They can have difficulty when organizing or completing a task, homework, assignments, and by handing in tasks
- They can often lose items or forget about them
- They do not seem to listen when they are spoken to
- They can daydream, become confused easily, and not move fast
- They have difficulty taking information quickly or correctly
- They seem to struggle when following instructions
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- 5 Disorders Share Genetic Risk Factors, Study Finds February 28, 2013 The New York Times
- Psychiatric Disorders Linked Genetically February 27, 2013 WSJ
- LONI: Laboratory of Neuro Imaging
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