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目的：：研究早期阿尔茨海默病患者精神行为症状( BPSD)的特点。方法：选取98例住院的早期阿尔茨海默病患者，均符合美国精神障碍诊断和统计手册第四版修正版( DSM-IV-R)的诊断标准，采用BEHAVE-AD量表，从偏执妄想、幻觉、行为紊乱、攻击行为、日夜节律紊乱、情感障碍7个方面，共25项进行BPSD症状的分析总结。结果：阿尔茨海默病早期最常见的精神行为症状依次为焦虑(49.0%)、抑郁(42.9%)、行为不当(42.9%)、激越(32.7%)、被窃妄想(30.6%)、日夜颠倒(24.5%)。结论：阿尔茨海默病早期即可出现精神行为症状， BPSD可能有助于早期阿尔茨海默病的筛查。“,”OBJECTIVE: To investigate the behavivral and psychological symptoms of dementia in the patients with early Alzhei-mer’ s disease ( AD) . METHOD: 98 hospitalized patients with AD were selected according to the Diagnostic and Statistical Manual of Mental Disorders. 25 Items including delusion, hallucination, behavior disorders, aggressive behavior, day and night rhythm dis-orders, affective disturbance and so on were analysed by 4h adition-revised (DSM-IV-R). RESULT: The most common symp-toms were anxiety ( 49%) , depression ( 42. 9%) , improper behavior ( 42. 9%) , agitation ( 32. 7%) , stolen delusion (30. 6%), day and night upside down (24. 5%). CONCLUSION: The most common mental behavior symptoms perform in early AD. BPSD possibly plays an important role in early diagnosis of AD.