# A Case Report of Shingles Vaccine as a Cause of Third Nerve Palsy: A Novel Etiology

## TL;DR

This paper reports a rare case where the shingles vaccine may have caused third nerve palsy, a novel and unexpected side effect.

## Contribution

The paper introduces a new potential side effect of the shingles vaccine: third nerve palsy.

## Key findings

- A case of third nerve palsy following the shingles vaccine is reported.
- This is the first known association between the zoster vaccine and third nerve palsy.

## Abstract

Vaccines are biological preparations widely used to provide acquired immunity against various life-threatening organisms and prevent severe complications of different infections. Vaccines typically demonstrate a high level of safety with minimal adverse effects. Nevertheless, it is crucial to enhance awareness when a potential new side effect emerges, as exemplified in the case discussed ahead. Despite the rarity of independent third nerve palsy occurrences, its association with the zoster vaccine remains unprecedented.