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为了解饮水型慢性砷中毒对神经系统的影响，对长期饮用高砷水并具有砷性皮肤损害的砷中毒患者５７名和饮用非高砷水的健康人５７名进行对照（１：１配比）研究。结果发现：砷中毒患者末稍感觉异常以痛觉、温度觉、压觉减退最为明显，与其对照对比有显著性差异（Ｐ＜０．０５％）；植物神经功能损害以少汗、无汗及指甲异常（弧影消失、指甲变暗）最为明显，与其对照对比有显著性差异（Ｐ＜０．０５）。结果提示，砷中毒患者伴有不同程度的神经系统损害。
In order to understand the effect of drinking water chronic arsenic poisoning on the nervous system, 57 arsenic poisoning patients who drink long-term high-arsenic water with arsenic-induced skin lesions and 57 healthy people who drink non-arsenic water were compared (1: 1) the study. The results showed that there was a significant difference between the control group and the control group (P <0.05%). The dysfunction of the autonomic nervous system included less sweat, no sweat and nails Anomalies (arc disappeared, nails darken) the most obvious, compared with the control was significantly different (P <0.05). The results suggest that arsenic poisoning patients with varying degrees of nervous system damage.