耳鸣是一种没有外界刺激而产生的主观感觉,随着人的年龄的增长与接触噪声量的增加,耳鸣的发生率显著升高。引起耳鸣的常见原因如下: 1.耳毒性药物 包括两类,一种只引起耳鸣,不造成听力下降。这类药物大部分是在中枢神经系统内影响了与神经递质有关的生物胺代谢过程,造成听觉中枢神经细胞出现“惊厥”的 Tinnitus is a subjective feeling without external stimuli. With the increase of people’s age and the amount of contact noise, the incidence of tinnitus is significantly increased. Common causes of tinnitus are as follows: 1. ototoxic drugs include two types, one only causes tinnitus, does not cause hearing loss. Most of these drugs affect the biogenic amine metabolism associated with neurotransmitters in the central nervous system, resulting in “convulsions” of the auditory central nervous system