例1女,38岁,以“眩晕3个月伴头痛”收住我科。自述3个月前,在农田施用化肥时出现旋转性眩晕,伴恶心、呕吐、胸闷。此后,常感觉头后枕区胀痛、眩晕,时而视物旋转,时而摇摆不稳,伴有恶心、呕吐。间歇期感觉头闷、头胀、头重脚轻,转来我院就诊。经系统及专科检查未见异常,纯音测听 Example 1 female, 38 years old, with “dizzy for 3 months with headache” in our department. Readme 3 months ago, rotting dizziness, with nausea, vomiting, chest tightness when applying fertilizer on farmland. Since then, often feel head and rear occipital pain, dizziness, sometimes depending on the material rotation, sometimes unstable, accompanied by nausea and vomiting. Intermittent feeling head and nausea, swollen, top-heavy, turn to our hospital. No abnormal system and specialist examination, pure tone audiometry