# Trigeminal Nerve and Vestibular System: Update on Pathophysiological and Clinical Links

## TL;DR

This paper reviews the anatomical and clinical connections between the trigeminal nerve and the vestibular system, highlighting their roles in various disorders and treatment approaches.

## Contribution

The paper provides a multidisciplinary narrative review of the anatomical and clinical interactions between the trigeminal nerve and the vestibular system.

## Key findings

- Anatomical connections between the trigeminal nerve and vestibular system are identified and may contribute to various disorders.
- Understanding these connections can improve clinical assessment and therapeutic approaches for vestibular disorders.
- The review emphasizes the importance of a multidisciplinary approach involving neurologists and otologists.

## Abstract

The points of contact between the vestibular system and the trigeminal nerve remain an active area of research. Anatomically, several connections have been clearly identified, and these may play a role in the development of various disorders. Understanding these connections also proves to be extremely valuable from a clinical perspective. It is increasingly evident that the etiopathogenesis of various vestibular disorders is multifactorial. Therefore, knowledge of the points of interaction between the two systems can assist clinicians in patient assessment and, most importantly, in selecting the most appropriate therapeutic approach. This study is presented as a narrative review. A literature search was conducted to identify studies investigating the correlation between the trigeminal system and the vestibular system, as well as their respective characteristics, to provide a comprehensive overview. Since this is a narrative rather than a systematic review, no specific inclusion or exclusion criteria were applied. So, the aim of this study is to analyze these connections through a comprehensive review of the literature, trying to present a multidisciplinary approach to the topic, one that can involve both the neurologist and the otologist, in order to achieve a more refined management of clinical cases. To better understand their anatomical relationships, we begin by examining the embryological development of both the vestibular system and the trigeminal nerve. Finally, we present current knowledge on the trigeminal influence in certain vestibular disorders—particularly vestibular migraine—and, conversely, the vestibular system’s potential impact on trigeminal-related conditions.