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Stye vs. Chalazion: Causes, Treatment, and When to See a Doctor

By Dr. Joseph King | King LASIK 

Dr. King is an ophthalmologist at King LASIK, serving patients in Seattle, Portland, Tacoma, Olympia, Tri-Cities, Everett, Vancouver, and the Scottsdale/Phoenix area.

A tender lump on your eyelid can be alarming, especially when it does not seem to go away. Most of the time, what you are dealing with is either a stye or a chalazion. They are related, but they are not the same thing, and knowing the difference matters when it comes to treatment.

Watch our quick overview below, then read on for everything you need to know about eyelid bumps, what causes them, and when it is time to come in.

What Is a Stye?

A stye, also called a hordeolum, is an infected oil gland in the eyelid. It tends to be red, painful, and tender, and it often looks like a small pimple at the edge of the eyelid. Swelling is common, and the whole eyelid can feel sore. Some people also experience tearing or light sensitivity.

What Is a Chalazion?

A chalazion is not an infection. It is a clogged oil gland that forms a firm, painless lump deeper in the eyelid. Think of it like a blocked drain. Oil backs up and hardens over time, creating a bump that can grow slowly over weeks. In some cases, a large chalazion can press on the eye and cause blurry vision.

A chalazion often forms after a stye, once the infection clears but the gland stays blocked.

Both conditions originate in the meibomian glands, the tiny oil-producing structures in your eyelids that keep your tear film healthy. When those glands get blocked or inflamed, eyelid bumps can follow.

What Causes Them?

Styes typically begin when bacteria get trapped in an oil gland or eyelash follicle, causing a small localized infection. Chalazia usually start with meibomian gland dysfunction, where oil becomes thick and slow-flowing, eventually plugging the gland.

Common risk factors for both include:

  • Chronic eyelid inflammation, known as blepharitis
  • Rosacea or seborrheic dermatitis
  • Old or contaminated eye makeup
  • Poor contact lens hygiene
  • Rubbing your eyes frequently

Just like with acne, some people are simply more prone to these bumps because of their skin type and oil gland activity.

How to Tell the Difference

Here is a quick way to tell them apart:

Stye:

  • Painful and tender
  • Red and swollen
  • Usually at the edge of the eyelid
  • May look like a pimple or small boil
  • Can cause tearing or light sensitivity

Chalazion:

  • Usually not painful
  • Firm, round bump deeper in the eyelid
  • Grows slowly over weeks
  • Can cause blurry vision if large enough

How Are They Treated?

The single most effective at-home treatment for both styes and chalazia is warm compresses. Heat softens the thickened oil and helps it drain. We recommend a clean, warm washcloth applied for 10 to 15 minutes, two to four times a day. Gentle eyelid massage afterward can help encourage drainage.

One important note: never squeeze or pop the bump. Doing so can worsen inflammation or cause scarring.

For styes specifically, good hygiene during healing makes a real difference. Avoid eye makeup until it resolves, skip contact lenses, use lubricating drops for comfort, and clean the eyelid margin with a gentle cleanser. Most styes improve within a few days. Chalazia often take a few weeks.

When to See an Eye Doctor

Some bumps do not respond to home care alone, and that is when it is time to come in. Our team may recommend:

  • Antibiotic ointment for styes
  • Steroid drops for chalazia with significant inflammation
  • Oral antibiotics if there is surrounding cellulitis
  • A small in-office steroid injection
  • Minor surgical drainage for persistent or large chalazia, performed under local anesthesia and typically completed in just a few minutes

We also encourage patients to schedule an evaluation if the bump keeps returning in the same spot, if the eyelid skin changes in appearance, if vision is affected, or if the entire eyelid becomes swollen and painful. Persistent bumps can occasionally mimic other conditions, so an exam ensures nothing more serious is going on.

A Note to Patients

We see patients regularly who feel embarrassed, as though they did something to cause this. The truth is, these bumps are incredibly common. Even with thorough hygiene, they can still happen.

If a stye or chalazion is affecting your comfort, your appearance, or your daily life, it is absolutely reasonable to seek treatment. Most patients who come in for the drainage procedure tell us afterward they wish they had not waited so long.

Book a Free Consult

If you have an eyelid bump that is painful, persistent, or just not going away on its own, our team is here to help. With seven convenient locations serving Seattle, Portland, Tacoma, Olympia, Tri-Cities, Everett, Vancouver, and the Scottsdale/Phoenix area, expert eye care is close to home. Book a Free Consult with the doctors at King LASIK or the expert eye surgeons at K2 Vision today, in person or virtually by phone or Zoom.