# Left Hemifacial Spasms Due to Left Vertebrobasilar Dolichoectasia

## TL;DR

This paper describes a case where left-sided hemifacial spasms were caused by left vertebrobasilar dolichoectasia, a condition involving abnormal arterial dilation.

## Contribution

The novelty lies in identifying VBD as a rare cause of HFS, supported by specific imaging findings.

## Key findings

- Left-sided HFS was linked to left vertebrobasilar dolichoectasia.
- Imaging confirmed arterial dilatation and tortuosity in the affected region.
- This case highlights the importance of considering VBD in HFS diagnosis.

## Abstract

Hemifacial spasm (HFS) arises from involuntary, recurrent, irregular tonic-clonic-like contractions of the muscles innervated by the facial nerve. Typically, compression of the facial nerve root exit on the same side is attributed to either a vascular loop or a mass located in the cerebellopontine (CP) angle. Dolichoectasia, alternatively termed dilated arteriopathy, is characterized by arterial dilatation, elongation, and tortuosity. Here, we present a case involving vertebrobasilar dolichoectasia (VBD) as the cause of HFS, alongside relevant imaging findings.