ABSTRACT
Dementia of the Alzheimer's type, in which cognitive impairment slowly progresses, accounts for more than half of dementia cases. Symptoms develop slowly and worsen over time, and there is no cure for Alzheimer's type dementia. We conducted a study on the efficacy of hangebyakujutsutemmato for cognitive impairment in dementia of the Alzheimer's type. Seventy-two patients with Alzheimer's type dementia were enrolled in our study. Hasegawa dementia scale-revised (HDS-R) was implemented for all patients, for whom hangebyakujutsutemmato medication was started at the initial visit. After 4-weeks' treatment the HDS-R was implemented again. Sixty-four patients were assessable and 8 patients dropped out from the study. In these 64 patients, mean age ± standard deviation was 79.9 ± 6.0, and 33 patients were male, and 31 patients were female. After 4 weeks of hangebyakujutsutemmato treatment, HDS-R scores were increased significantly compared with baseline (from 15.5 ± 5.2 to 16.9 ± 6.2, p < 0.01). In taking histories from families, clinical presentation was shown to have improved in 13 patients (20.3%). To our knowledge, this is the first report demonstrating that hangebyakujutsutemmato is effective for patients with dementia of the Alzheimer's type. In conclusion, hangebyakujutsutemmato is a useful option for the treatment of cognitive impairment in Alzheimer's type dementia.