[Genetic background of ADHD: population studies, genes of the catecholamine system].


Attention-deficit hyperactivity disorder (ADHD) begins in early childhood. In this article we review the studies supporting a genetic background of this disorder. ADHD occurs in 3-10% of the general population. Family studies reveal a 5 times more likely frequency of ADHD among first-degree relatives than in the general population. Monozygotic twin… (More)


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