肌源性耳鸣机制分型与诊疗

Mechanistic Classification and Management of Myogenic Tinnitus

摘要:

肌源性耳鸣并非单一疾病，而是由中耳肌、腭咽及咽鼓管周围肌群、面神经相关肌群或颈颌肌筋膜系统异常活动产生或调制的一组异质性耳鸣。既往临床常将节律性或点击样耳鸣笼统归为中耳肌阵挛，易忽视不同部位在神经支配、声源形成、诱发因素和治疗靶点上的差异。本文将肌源性耳鸣区分为狭义直接声源型和广义躯体感觉调制型，并按镫骨肌、鼓膜张肌、中耳双肌阵挛、腭震颤、咽鼓管周围及鼻咽肌源性声源、面神经相关肌源性耳鸣和颈颌躯体感觉调制等类型，综述其发病机制、检查定位和治疗策略，以期为临床分层诊疗提供参考。

Abstract:

Myogenic tinnitus is a heterogeneous spectrum of tinnitus generated by abnormal muscle activity or modulated by musculoskeletal somatosensory input involving the middle ear muscles, velopharyngeal and peritubal muscles, facial nerve-related muscles, or cervicofacial myofascial structures. Rhythmic or clicking tinnitus is often broadly attributed to middle ear myoclonus, which may obscure site-specific differences in innervation, sound generation, triggers, and therapeutic targets. This review distinguishes direct myogenic sound generation from muscle-related somatosensory modulation and summarizes stapedius-related tinnitus, tensor tympani-related tinnitus, combined middle ear myoclonus, palatal tremor, peritubal and nasopharyngeal myogenic sound sources, facial nerve-related tinnitus, and cervicofacial somatosensory modulation. A mechanism-oriented diagnostic and therapeutic framework is proposed to support clinical localization and individualized management.