老年性痴呆是一种退行性的脑病,属大脑皮层痴呆。初始症状为记忆障碍并逐渐消失,语言表达困难,失去识别能力,外出不辨方向,以及感觉运动能力缺陷,易激怒和猜疑。目前,老年性痴呆症的发病率呈逐年上升趋势。据说在60岁以上的老年人中有10%患痴呆,85岁以上的老年人中几乎一半出现痴呆。据统计,目前世界各国人口老龄化,全球大约有1500万老年性痴呆症患者。 Alzheimer’s disease is a degenerative brain disease, is a cerebral cortex dementia. Initial symptoms of memory impairment and gradually disappear, language expression difficulties, loss of recognition ability to go out and do not distinguish the direction, as well as sensory impairment, irritability and suspicion. At present, the incidence of Alzheimer’s disease is increasing year by year. Allegedly, 10% of the elderly over the age of 60 have dementia, and almost half of the elderly over 85 years old have dementia. According to statistics, there are about 15 million people with Alzheimer’s disease in the world around the world nowadays.