痴呆,是以呆傻愚笨为主要临床表现的一种神志疾病。轻者可见精神淡漠,寡言少语、记忆力差、反应迟钝等症。重者表现为终日不语,或自言自语,言语颠倒,举动异常,忽笑忽哭,有些甚至不能独立处理日常生活,给家庭带来了许多烦恼。痴呆的病因较多,其发生基础是原发或继发性脑部病理生理改变,其中一些属于不可逆性逐渐进展的病例,也有一些病例经治疗获得不同程度的好转甚至 Dementia, is a stupid stupid as the main clinical manifestations of a mental illness. Light visible indifference, with few words, poor memory, unresponsive embolism. Those who suffer heavy losses are all-day speechless, or talking to others, reversing speech, acting abnormally, laughing and crying, and some can not even deal with daily life independently, bringing many troubles to the family. The causes of dementia are more, its occurrence is based on the primary or secondary brain pathophysiological changes, some of which are irreversibly progressive cases, there are some cases have been treated to varying degrees of improvement or even