A new study finds that the rise in attention deficit hyperactivity disorder, or ADHD, is not a uniquely American phenomenon.

一项新的研究发现，注意力缺陷多动障碍、或称adhd病例的增加，并不是美国独有的现象。

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What is Attention Deficit Hyperactivity Disorder?

什么是注意缺陷多动症？

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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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Autism, attention deficit-hyperactivity disorder, bipolar disorder, major depressive disorder and schizophrenia all share several genetic risk factors, according to a major study.

BBC: Five psychiatric disorders 'linked'

This kind of doublespeak became more and more troubling, and my career came to an end over a job involving revising a manuscript supporting the use of a drug for attention deficit-hyperactivity disorder (ADHD), with a duration of action that fell between that of shorter- and longer-acting formulations.

FORBES: A Former Pharma Ghostwriter Speaks Out

It used to be red-flag disorders like autism and attention-deficit hyperactivity disorder that attracted attention in early childhood.

WSJ: ADHD Warning Signs and Kids: Growing Pains or Cause for Concern?