1病历资料男,59岁。因头晕耳鸣5月加重2d入院。患者自诉于入院前5月无明显诱因出现头晕伴耳鸣,无头痛,无恶心、呕吐,无眼干、口干,无发热、皮疹、颞下颌关节疼痛,无咳嗽、咳痰等。既往体健,无药物过敏史及家族遗传病史。查体:体温 1 medical records male, 59 years old. Tinnitus due to dizziness in May increased 2d admission. Patient self-prosecution in May before admission no obvious incentive to appear dizziness with tinnitus, no headache, no nausea, vomiting, no dry eyes, dry mouth, no fever, rash, temporomandibular joint pain, no cough, sputum and so on. Past physical health, no history of drug allergy and family history of heredity. Physical examination: body temperature