鼻部手术或鼻出血行鼻腔填塞后 ,多应用抗生素预防感染 ,而应用青霉素引起的毒性反应 ,特别是出现神经———精神症状 ,专业杂志上报道不多 ,当该症状与术后反应及其它疾病症状相迭加时 ,易误诊而影响治疗。本文报告了我们遇到的 3例老年病例 ,在复习文献的基础上 ,对老年人药 Nasal surgery or nasal hemorrhage after nasal packing, the more use of antibiotics to prevent infection, and the application of penicillin-induced toxicity, especially the emergence of neurological --- psychiatric symptoms reported in professional journals, when the symptoms and postoperative response and Other disease symptoms when stacked together, easily misdiagnosed and affect the treatment. This article reports on the three elderly cases that we encountered. Based on the review of the literature,