---
title: "Blepharospasm (involuntary eyelid spasm) | Eye Health Guide"
description: "What blepharospasm is, how it differs from harmless eyelid twitching, and how botulinum toxin injections help control forceful, involuntary eyelid closure."
url: https://eyehealthguide.org/conditions/blepharospasm/
source: Eye Health Guide
licence: "General information only. Cite the URL and the named medical reviewer."
---

Condition

# Blepharospasm (involuntary eyelid spasm)

Medical reviewer [Mr Mohamed Mohyudin](https://eyehealthguide.org/reviewers/mohamed-mohyudin/)· Last recorded site review July 6, 2026

### About this review

This page inherits the site’s previous review record. A separate, current article sign-off has not yet been recorded.

[How review works](https://eyehealthguide.org/reviewers/) · [Official biography & credentials](https://mohamedmohyudin.co.uk/author/mohamed-mohyudin/)

Quick answer

Blepharospasm is a condition where the eyelid muscles contract involuntarily, causing forceful blinking or eyelid closure. It is more severe than the common, harmless eyelid twitch and can affect daily life. It is usually long-term, but botulinum toxin injections are an effective treatment.

### On this page ⌄

1. Your next step
2. What it is
3. Common symptoms
4. Causes and triggers
5. Treatment
6. Related conditions
7. Frequently asked questions

## What it is

Blepharospasm is a type of focal dystonia where the muscles around the eyes contract uncontrollably. Unlike a brief, minor eyelid twitch, it causes repeated forceful blinking or sustained closure that can, in severe cases, make it hard to keep the eyes open.

## Common symptoms

Symptoms usually affect both eyes and build up gradually.

- Frequent, forceful blinking you cannot control
- Eyelids squeezing shut, sometimes for seconds at a time
- Symptoms worse with bright light, stress or tiredness
- Increasing difficulty with reading, driving or watching screens

## Causes and triggers

The exact cause is not fully understood but involves abnormal signals from the part of the brain controlling movement. It is often made worse by bright light, fatigue, stress, and dry eye, which is why treating dry eye can help.

## Treatment

The main treatment is regular botulinum toxin (Botox) injections into the eyelid muscles, which relax the spasms and are repeated every few months. Managing dry eye, using tinted glasses for light sensitivity, and reducing triggers also help, and surgery is reserved for severe cases.

## Related conditions

## Frequently asked questions

### What is the difference between blepharospasm and a normal eye twitch?

A normal eye twitch is brief, harmless and usually affects one lower lid. Blepharospasm causes repeated, forceful closure of both eyes and can interfere with daily activities, often needing treatment.

### How is blepharospasm treated?

The main treatment is botulinum toxin (Botox) injections into the eyelid muscles, repeated every few months. Managing dry eye and light sensitivity also helps.

### Will blepharospasm go away on its own?

Unlike a minor twitch, blepharospasm is usually a long-term condition. It is well controlled in most people with regular botulinum toxin injections.

Your next step

## Take this to your appointment

Write down what has changed, when it started, your current medicines and the questions you want answered. Take these to your eye-care appointment.

Sudden loss of sight, severe eye pain or a dark curtain across vision needs immediate assessment. Do not wait to complete a worksheet.

## Sources for this information

These references support the information on this page. Follow the linked source for its full context.

- [National Eye Institute - Blepharospasm](https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/blepharospasm)