Children with the severest for m, called "attention deficit hyperactivity disorder", exhibit such disruptive behaviour that it impairs their learning and function at home and at school.

多动症最严重的一种形式叫做“注意缺陷多动障碍”，患这类多动症的孩子，其行为的破坏性甚至严重到影响他们的正常生活和学习。

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Children with attention deficit hyperactivity disorder exhibit a range of symptoms.

患有多动症的儿童会表现出一系列的症状。

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In the second trial, children with PDD and hyperactivity were treated with the stimulant methylphenidate, which is commonly used to treat attention deficit hyperactivity disorder.

第二个试验pdd和多动症儿童以兴奋剂methylphenidate，这一般用作注意缺陷多动症的治疗方式。

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Many are concerned that Ritalin and similar drugs, which aid concentration in those with Attention Deficit Hyperactivity Disorder, are chemical straightjackets that prevent children from taking full responsibility for themselves.

FORBES: Ritalin 'Doesn't Turn ADHD Children Into Robots'

One of the children they placed was a ten-year-old boy with attention deficit disorder and hyperactivity.

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