Stye or pink eye: how to tell them apart

A stye is a tender lump that forms on the eyelid. Pink eye, or conjunctivitis, is inflammation of the surface of the eye that makes the white of the eye look pink or red. The fastest way to tell them apart is location: if you can feel a bump on the lid, you are probably looking at a stye.

For a stye vs pink eye question, that distinction matters because the two are usually managed differently. A stye is treated locally with warm compresses, while pink eye usually needs prescription drops depending on the cause. Here is how to separate them, and when neither should be handled at home.

What is a stye?

A stye, medically a hordeolum, is an acute infection of an eyelash follicle or an oil gland in the eyelid.

It develops quickly, becomes red and swollen, and is often painful to touch. It is a small, focused problem centered on one spot in the lid, and it usually improves within one to two weeks. A stye is different from a chalazion, which is a painless blocked gland that can linger for months.

What is pink eye?

Pink eye, or conjunctivitis, is inflammation of the conjunctiva, the clear membrane that covers the white of the eye and lines the inside of the eyelids.

The redness is on the eye surface rather than in the lid itself, and it is often accompanied by discharge, watering, or itching. Conjunctivitis has three main forms: bacterial, which tends to produce a thick discharge that crusts overnight; viral, which is very common and produces watery discharge with a gritty feeling; and allergic, which produces clear watery discharge with prominent itching. Most cases are infectious and resolve within about one to two weeks.

Stye vs pink eye: key differences

How to tell them apart at home

1. Look for a lump. If you can feel or see a distinct bump on the eyelid, that is a stye. Pink eye does not produce a discrete lump.
2. Check the white of the eye in daylight. Pull the lid down gently and compare. Pink eye shows redness on the eye surface itself, away from the lid margin.
3. Look at your lashes in the morning. Thick, crusty discharge that glued your lashes together overnight points to bacterial conjunctivitis. A stye leaves the lashes mostly clean.
4. Ask about itch. Itching is a hallmark of allergic conjunctivitis and of dry eye, and it is not typical of a stye.
5. Test your vision. Blurring that wipes away with blinking and blinking itself feels sticky often points to discharge rather than a stye. Blurring that does not clear is a reason to be examined.
6. Watch the timeline. A stye typically appears over hours and starts improving within days. Pink eye often follows a cold or an exposure to someone with a red eye, and both eyes may be affected.

Treatment options

For a stye

Warm compresses are the standard first step. Apply a clean warm compress for about 10–15 minutes, 3–4 times a day, using comfortably warm rather than scalding water, and use a fresh cloth each time. Gentle lid hygiene helps clear bacteria and debris. Most styes drain on their own within one to two weeks, and a stye that persists beyond two to four weeks may need an in-office steroid injection or drainage.

Do not squeeze, puncture, or press on a stye to pop it. That can spread the infection into the surrounding tissue and cause a spreading infection.

For pink eye

Treatment depends on the cause, so an examination is usually needed to pick the right approach. Antibiotic drops are used for bacterial conjunctivitis. Viral conjunctivitis is managed with comfort measures and is often given antibiotics only if a clinician suspects a secondary bacterial infection. Allergic conjunctivitis is treated with antihistamine or steroid drops and by avoiding whatever trigger is provoking it, such as pollen or pet dander. Cold compresses and artificial tears can ease the discomfort of any form.

Because pink eye is infectious in most cases, wash your hands often, do not touch your eyes, and do not share towels, pillowcases, or eye makeup until the discharge has stopped and the eye is no longer red.

When to see a doctor

Seek prompt or same-day care if you notice:

• Any change in vision, including blurring that does not clear with blinking
• Severe eye pain, or pain when moving the eye
• Sensitivity to light
• A white spot on the eye itself, or a red eye with a fixed pupil
• Redness or swelling that spreads beyond the eyelid onto the cheek
• Fever, or feeling generally unwell
• A stye that is not improving after two to four weeks, or one that keeps recurring
• A red eye that is not clearly improving after a few days of home care

A single red eye with no other symptoms can have causes beyond conjunctivitis, including foreign bodies, corneal injury, or uveitis, and those need a clinician’s eye. Do not wear contact lenses with a red eye until it has fully settled.

Prevention

• Wash your hands with soap before touching your face or eyes, and avoid rubbing your eyelids.
• Do not share towels, washcloths, pillowcases, eye makeup, or contact lenses.
• Replace eye makeup regularly, and discard mascara and liner after an eye infection.
• Clean your eyelid margins gently each day if you have oily skin, rosacea, or a history of styes.
• Do not squeeze or pop eyelid bumps, which is the most common route to a spreading infection.
• Avoid touching your eyes with unwashed hands in public and after handling money or shared surfaces.
• Manage chronic blepharitis or skin conditions around the eye, since ongoing lid inflammation drives most blocked glands.

FAQ

Can you have a stye and pink eye at the same time?

Yes, it is possible to develop conjunctivitis and have a stye at the same time, since both are infections and one does not prevent the other. The care for each is compatible, since both call for warm compresses, clean hands, and no shared towels or makeup.

Is a stye the same as conjunctivitis?

No. A stye is an infection of an eyelash follicle or oil gland in the eyelid. Conjunctivitis, or pink eye, is inflammation of the conjunctiva, the clear membrane covering the white of the eye and the inside of the lids. Different tissue, different problem, different treatment.

Does pink eye always run from the eye overnight?

Not always. Bacterial conjunctivitis often produces a thick discharge that crusts the lashes overnight. Viral conjunctivitis tends to produce a watery discharge, and allergic conjunctivitis produces clear, watery discharge with itching rather than crusting.

Is a stye contagious?

A stye itself is not usually spread from person to person. Most cases of pink eye, particularly the bacterial and viral forms, are infectious, so towels, pillowcases, and eye makeup should not be shared while an eye is red and discharging.

Can I wear contact lenses with either?

It is safest to leave contact lenses out until the eye is completely settled and any discharge has stopped, then use a fresh pair rather than reusing the ones worn during the infection. Your eye care provider can confirm when it is appropriate to resume lenses.

When should I see a doctor instead of treating this at home?

Seek prompt care for any change in vision, pain with eye movement, severe pain, light sensitivity, or a red eye that is not improving after a few days. A stye that has not improved after two to four weeks also warrants an appointment.

Sources

• https://www.aao.org/eye-health/diseases/stye
• https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases
• https://www.nhs.uk/conditions/stye/
• https://www.aao.org/eye-health/diseases/chalazion

This article is for general information and is not medical advice.