Eye Stye: Symptoms, Causes, Treatment & Prevention

This guide covers eye stye symptoms, causes, treatment and prevention.

An eye stye is a painful bump caused by an infected eyelid oil gland. Doctors also call it a hordeolum. It can form on the upper or lower eyelid.

A stye often looks like a small pimple near the eyelid edge³. Most cases are harmless and do not affect clear sight^4,5. Many improve with warm compresses, gentle cleaning, and time^4,8.

However, some eyelid bumps need medical care. Seek an evaluation if swelling worsens, spreads, or affects your vision^4,5. Frequent styes may also point to an ongoing eyelid or health problem^1,3.

A stye is an acute, localized infection in an oil-producing eyelid gland. “Acute” means it starts quickly and lasts a short time. The infection causes pain, swelling, tenderness, and sometimes a pus-filled tip.

Oil glands line the eyelids and help lubricate the eye’s surface⁴. A stye forms when a gland or eyelash follicle becomes blocked and infected^4,6. The blocked area may then develop into a small abscess containing pus³.

Styes tend to develop over several days. The bump may drain without help or settle with basic home care. Most styes go away within about one or two weeks⁴.

Doctors divide styes into two main types. Their location depends on which gland becomes infected³.

External styes are more common than internal styes^4,6. Both types can cause a tender, swollen eyelid.

A chalazion is another type of eyelid bump. It develops when a small oil gland becomes blocked.

A stye is painful, red or discolored, and linked to an acute infection^1,4. A chalazion is usually less painful and follows a longer course^1,3,5. It is a chronic, noninfectious eyelid lesion.

A stye can sometimes develop into a chalazion^1,3. An eye care professional can examine a bump that lasts or keeps returning⁴.

Eye stye symptoms can vary with the bump’s location and size. They often involve one eyelid, although styes can affect both eyelids⁴.

The main sign is a painful bump along the eyelid edge⁴. It may look red or discolored and feel sore when touched⁴. Some styes develop a visible pustule, which is a small pocket of pus^1,3.

Common eye stye symptoms can include the following changes:

These signs can overlap with other eyelid conditions. A professional eye exam can help confirm the cause⁴.

Swelling typically affects a localized area along the eyelid margin^1,3. The swelling may form a red, tender nodule near the eyelid margin^1,3. A small pus-filled head may appear as the stye develops.

The bump may drain by itself or improve with home care. Many styes last one to two weeks before going away⁴. Pain and swelling should begin improving rather than getting steadily worse⁴.

Temporary blurred vision can happen if swelling blocks the line of sight^1,3. Vision changes still need medical review because a typical stye should not harm sight^4,5.

A healthcare professional usually diagnoses a stye by examining the eyelid^4,8. A light and magnifying tool may help with the examination.

The clinician may ask about pain, swelling, duration, and past eyelid bumps^1,3. They may also review contact lens use, makeup habits, and eyelid care^1,3. Health conditions such as diabetes or rosacea may also be discussed^1,3.

Testing is generally unnecessary for a typical stye⁶. A clinician may consider more testing when the condition is unusual or keeps returning^3,4.

A blocked gland followed by bacterial growth causes most styes^1,4. The most common bacterium is *Staphylococcus aureus*^1,3. Other bacteria can cause styes less often.

Staphylococcus bacteria can live on the skin without causing trouble⁶. Problems begin when they become trapped inside a blocked gland or follicle⁶. The body’s response then causes swelling, pain, and pus formation.

Hands, cosmetics, and contact lenses may carry bacteria toward the eyelid^5,6. Some habits can also block the small oil glands^1,6.

Daily risk factors can include these common practices:

Eye rubbing can move bacteria from the hands to the eyelids⁶. Poor eyelid hygiene can also allow oil and crust to collect near gland openings^1,6.

Contact lens care deserves special attention. Improper lens hygiene can introduce bacteria to the eyelid margin. Always follow your eye professional’s cleaning and replacement advice.

Some health problems make blocked or inflamed eyelid glands more likely. Others can raise the chance of infection.

Conditions linked with styes include the following examples:

Meibomian gland dysfunction can cause repeated styes and chalazia⁷. Blepharitis can block eyelid glands and contribute to stye formation. Learn more in this guide to blepharitis and eyelid care.

Recurring styes may be linked to blepharitis, rosacea, or diabetes³. An eye care professional can look for these causes during an examination^1,3.

Most uncomplicated styes improve without prescription treatment^4,8. Home stye treatment aims to ease discomfort and support natural drainage.

A warm compress is the main home treatment. It may help the stye drain and heal sooner.

Follow these steps for safe home care:

You can also gently wash the affected eyelid with mild soap and water. Avoid harsh rubbing around the sore area. Follow professional instructions if you already use a special eyelid cleanser.

Leave the stye alone while it heals. Trying to force drainage can spread the infection.

Avoid these practices until the eyelid has recovered:

Makeup may further block the gland and delay healing⁴. Contact lenses can also carry bacteria linked with the stye.

Antibiotics are not needed for every stye. Many cases go away with warm compresses and time^4,8.

A clinician may prescribe antibiotic drops or ointment for a stye that does not improve. Oral antibiotics may be used when infection persists or spreads beyond the eyelid. Treatment depends on the examination and the infection’s extent.

A resistant stye may need drainage by an eye doctor^4,8. The doctor makes a small opening to release the pus^4,8. Local anesthesia may be used to prevent pain during the procedure⁴.

Never try to drain a stye at home. A clinician should perform this procedure under clean, controlled conditions.

Many styes can first be managed with home care^4,5. However, worsening or unusual changes need a healthcare professional’s review.

Arrange an eye examination in these situations:

A stye does not always affect vision^4,5. Blurred sight may occur when swelling physically blocks the visual path^1,3. A clinician should assess any new or worsening vision change⁴.

Spreading infection can involve tissues around the eye in rare cases³. That complication requires urgent medical treatment³.

Good hygiene can lower the risk of blocked glands and bacterial transfer^5,6. These habits are central to how to prevent styes.

Wash your hands often with soap and warm water. An alcohol-based hand cleaner is another option when soap is unavailable. Keep unwashed hands away from the eyes.

Use these habits to protect your eyelids:

Carefully cleaning the eyelid edges is a standard treatment for meibomian gland inflammation². Blepharitis can cause buildup at the base of the eyelashes and is often associated with gland inflammation^2,5.

Wash and dry your hands before inserting or removing contact lenses^5,6. Clean and disinfect lenses according to professional instructions. Follow the advised storage and replacement schedule.

Do not wear contact lenses while an active stye heals. Lenses may carry bacteria associated with the infection. Ask your eye professional when it is safe to restart lens use.

Past styes can return. Regular warm compresses may help prevent another episode after a previous stye.

Follow your eye professional’s care plan if you have blepharitis. Keeping the eyelids clean and treating related skin problems may support gland health². Rosacea may also require treatment because it can affect meibomian gland function^1,2.

Repeated styes can occur with meibomian gland dysfunction⁷. This problem changes the amount or quality of oil released by eyelid glands⁷. Treatment may include eyelid care and other methods chosen by an eye professional^2,7.

A stye that affects vision or worsens after a few days warrants a visit to an eye doctor⁴. The clinician can check for blepharitis, gland problems, rosacea, diabetes, or weakened immunity^1,3.

Most styes are painful but harmless eyelid infections^1,4. They often resolve within one or two weeks⁴. Warm compresses and gentle eyelid care can support healing.

Do not squeeze or puncture the bump because infection may spread. Avoid contact lenses and eye makeup until it heals.

Seek medical care if symptoms worsen, spread, affect vision, or keep returning^4,5. Early review can identify a persistent infection or an underlying eyelid problem^1,3.