---
title: What is chalazion?
description: "A chalazion is a firm, painless or mildly tender lump in the eyelid caused by blockage of a Meibomian oil gland. It may follow or coexist with an inflamed stye. ## How chalazia develop Oil becomes trapped within the gland…"
url: "https://bluefinvision.com/knowledge-base/topics/conditions-diseases/what-is-chalazion/"
updated: "2025-12-11"
category: "Conditions & Diseases"
---

# What is chalazion?

A chalazion is a firm, painless or mildly tender lump in the eyelid caused by blockage of a Meibomian oil gland. It may follow or coexist with an inflamed stye.

## How chalazia develop

Oil becomes trapped within the gland and surrounding tissue, leading to a slow-growing cyst. Small chalazia often settle with warm compresses and lid care, while larger or persistent ones may need a minor procedure.

- More common in people with blepharitis or oily skin
- Usually not related to cancer, but recurrent lesions should be assessed
- Warm compresses and gentle massage help drainage
- Surgical drainage can be performed from the inside of the lid if needed

## Further information

Chalazion assessment and removal are provided within [oculoplastic surgery](https://bluefinvision.com/oculoplastic-surgery/) services at Blue Fin Vision®. Causes and treatment options are discussed in [what is a chalazion and how to treat it](https://bluefinvision.com/blog/what-is-a-chalazion-and-how-treat-it/).