Stye or Swollen Eyelid - What It Is and When to Worry

Common questions

What is a stye?

A stye is a small, tender lump at the edge of the eyelid, caused by a blocked and infected gland at the lash line. It usually comes on over a day or two, starting as redness and tenderness before developing into a swollen point that can look like a small pimple. The eyelid around it is often mildly puffy and red. Styes are common and are not a sign anything is wrong with the eye itself - most settle on their own with consistent warm compresses within a week or two.

What is the difference between a stye and a chalazion?

A stye is an infection at the eyelid margin - tender, comes on quickly, and usually settles within a week or two of warm compresses. A chalazion is a blocked oil gland further back in the lid. It builds more slowly, often over weeks, and is usually firm and painless rather than tender - many people notice it as a lump rather than a spot that hurts. A chalazion can follow an untreated stye or appear on its own. A painless lump is not urgent, but one that persists for several weeks without settling is worth having examined.

How do I treat a stye at home?

Warm compresses are the mainstay - consistency matters more than any single application. Hold a clean, warm, damp cloth against the closed eyelid several times a day, rewarming it as it cools, then gently massage toward the lash line to help the gland drain. Keep the area clean, avoid touching or rubbing the eye, and switch to glasses instead of contact lenses while it is active. Most styes respond within a week or two. If a stye is not improving, is getting larger, or affects your vision, have it looked at rather than continuing to wait.

When is a swollen eyelid an emergency?

Most eyelid swelling stays confined to the lid and is not dangerous. Pain when you move your eye, or the eye looking pushed forward, means an emergency department today - these can indicate orbital cellulitis, an infection spreading behind the eye that can threaten vision. Swelling spreading onto the cheek or forehead, or a fever, without those two signs, still needs same-day medical assessment, but not necessarily an emergency department - call us or your family doctor. An ordinary stye does not cause pain on eye movement or push the eye forward.

Why do I keep getting styes?

Recurrent styes usually point to an underlying cause rather than bad luck. Blepharitis (ongoing inflammation of the eyelid margin) and meibomian gland dysfunction (poor drainage of the lid’s oil glands) both make glands more prone to blocking and infection. If styes keep coming back, even in different spots or eyes, it is worth having your eyelids and glands checked - addressing gland and lid-margin health can reduce how often new styes form. One exception: a lump that keeps recurring in exactly the same place, or that changes the lid margin or lashes, should be looked at specifically.

Should I pop a stye?

No. Squeezing or popping a stye can push the infection deeper into surrounding tissue instead of letting it drain naturally, making things worse rather than better. It can also spread infection to nearby glands or leave scarring at the lid margin. Warm compresses work by encouraging the gland to drain at its own pace, which is safer and generally more effective than forcing it. If a stye is not draining or resolving after consistent compresses, that is a reason to have it examined and properly managed in the office - not a reason to squeeze it yourself.

Can I wear contact lenses or makeup with a stye?

It is best to avoid both while a stye is active. Contact lenses sit close to the lid margin and can introduce bacteria to an already infected area, or irritate the stye further, so switching to glasses is the safer choice. Eye makeup near the lash line carries similar risk, and brushes or applicators used near an active stye can become contaminated and reintroduce infection later. Once the stye has fully resolved, both are generally fine to resume.

Related

• Dry eye disease - evaporative dry eye and meibomian gland dysfunction share a mechanism with recurrent styes
• What is meibography and does Spadina Optometry offer it? - imaging the meibomian glands directly
• Urgent eye problems - optometrist vs ER - when to call, when to go to emergency
• Red eye - optometrist, walk-in clinic, or emergency room? - a different urgent symptom and how to tell them apart