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Attention Deficit Hyperactivity Disorder (Adhd) National
National Institute of Mental Health
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Attention Deficit Hyperactivity Disorder (Adhd) National
National Institute of Mental Health
Attention deficit hyperactivity disorder (ADHD) is one of the most common childhood brain disorders and can continue through adolescence and adulthood. Symptoms include difficulty staying focused and paying attention, difficulty controlling behavior, and hyperactivity (over-activity). These symptoms can make it difficult for a child with ADHD to succeed in school, get along with other children or adults, or finish tasks at home. Brain imaging studies have revealed that, in youth with ADHD, the brain matures in a normal pattern but is delayed, on average, by about 3 years. The delay is most pronounced in brain regions involved in thinking, paying attention, and planning. More recent studies have found that the outermost layer of the brain, the cortex, shows delayed maturation overall, and a brain structure important for proper communications between the two halves of the brain shows an abnormal growth pattern. These delays and abnormalities may underlie the hallmark symptoms of ADHD and help to explain how the disorder may develop.
Medie | Bøger Paperback Bog (Bog med blødt omslag og limet ryg) |
Udgivet | 2. november 2014 |
ISBN13 | 9781503063150 |
Forlag | CreateSpace Independent Publishing Platf |
Antal sider | 26 |
Mål | 2 × 178 × 254 mm · 63 g |
Sprog | Engelsk |
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