| Objective: Head-injury became more and more important in our life when we talked of health. The most common etiological factor was traffic accidents. The next two were fighting and falling injury. In all head injury cases mild HI was far more than medium and gravis type. Cerebral concussion was one of common mild HI. Its clinical symptom usually showed a procession of awake-cataphora-awake. In the past we took it true that there were no substantive changes in brain tissue, but now it was accepted that it started a series of physiology and pathology changes in brain. For example, harming nerve cells and cerebral angio spasm. Xiao Xingyi reported that there were 23.2% patients leaving auditory function disturbance over after cerebral concussion which were second only to dizzy and headache. The mechanism was not clear yet. We found after observation that auditory function disturbance endured a long time of cerebral angio spasm. In addition, the pressure wave developed by outside power affected structure in brain through the base of skull and then damaged auditory brainstem. Due to inertia the auricular bone made backplane overworking which led concussion of labyrinth. Therefore the otolaryngologists should pay more and more attention to the injury of auditory...
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