儿童多动症的原因及表现

来自周小凤医生的专业解答，快打开看看是否又获得了新的知识点～

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病情分析：精神发育受损或成熟延迟。此类儿童行为较幼稚，动作笨拙，协调性差。孩子的母亲在孕期或围产期时并发症较多，遗传、素质因素。许多多动症儿童的父母小时候也多动；不少母亲反映患儿在胎儿期就好动，出生后好哭，入睡困难，进食不好，难以照顾。

周小凤

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问题描述：我朋友家孩子一直喜欢乱动乱窜怀疑是多动症，那么这种疾病原因和表现是什么呢?