过动症 guòdòngzhèng ADHD Origin Definitions Defs Strokes Stroke Words Sentences Sents 注意力不足过动症 zhùyìlìbùzúguòdòngzhèng ADHD attention deficit hyperactivity disorder注意力缺陷过动症 zhùyìlìquēxiànguòdòngzhèng ADHD attention deficit hyperactivity disorder; a neurodevelopmental disorder characterized by difficulty paying attention, excessive activity, and impulsiveness