Eye Stye (Hordeolum): Causes, Symptoms, and Treatment

Overview

A stye (also spelled "sty" and medically known as a hordeolum) is a common, painful eyelid condition caused by a bacterial infection. It appears as a red, swollen bump near the edge of the eyelid, often resembling a pimple. Styes can develop on the outside (external hordeolum) or inside (internal hordeolum) of the eyelid.

Who it affects: Styes can occur in people of all ages, but they are particularly common in children and adults who frequently touch their eyes without washing their hands. People with underlying conditions like blepharitis (eyelid inflammation) or rosacea are also at higher risk.

Prevalence: Styes are extremely common, accounting for roughly 95% of eyelid infections seen in clinical practice (NIH). Most people experience at least one stye in their lifetime, and they are rarely a sign of a serious condition.

Symptoms

Styes typically develop over a few days and may include the following symptoms:

• Red, painful bump – A tender, raised area near the edge of the eyelid, often filled with pus.
• Swelling – The entire eyelid may become swollen, especially if the stye is large.
• Tearing or watery eyes – Increased tear production due to irritation.
• Sensitivity to light (photophobia) – Bright lights may cause discomfort.
• Crusting along the eyelid – Dried discharge may form, especially after sleep.
• Feeling of a foreign object – Some people describe a gritty or scratchy sensation.
• Blurred vision – If the stye is large enough to press on the eye.

In some cases, a stye may rupture and drain on its own, providing relief. However, squeezing or popping a stye can worsen the infection and should be avoided.

Causes and Risk Factors

Most styes are caused by a bacterial infection, typically from Staphylococcus aureus, a common bacterium found on the skin. The infection usually begins in an oil gland (meibomian gland) or eyelash follicle.

Common Causes:

• Bacterial infection – Often from touching the eyes with unwashed hands.
• Blocked oil glands – When glands become clogged, bacteria can multiply.
• Blepharitis – Chronic eyelid inflammation increases stye risk.
• Poor hygiene – Not removing makeup or rubbing eyes with dirty hands.

Risk Factors:

• Using expired or contaminated eye makeup.
• Wearing contact lenses without proper hygiene.
• Having a history of styes or chalazions (non-infectious eyelid cysts).
• Underlying skin conditions like rosacea or seborrheic dermatitis.
• High stress or lack of sleep, which can weaken immune defenses.

Diagnosis

Styes are usually diagnosed through a physical examination by a healthcare provider or eye specialist (ophthalmologist). In most cases, no special tests are needed.

Diagnostic Steps:

1. Medical history – The doctor may ask about symptoms, duration, and previous eye issues.
2. Eyelid examination – Using a bright light and magnification to inspect the stye.
3. Rule out other conditions – Such as chalazions (non-infectious cysts) or cellulitis (a more serious infection).

If the stye is recurrent or unusually large, the doctor may take a culture to identify the bacteria, though this is rare.

Treatment Options

Most styes resolve on their own within 7–10 days, but treatment can speed up healing and relieve discomfort.

Home Remedies:

• Warm compresses – Apply a clean, warm washcloth to the stye for 10–15 minutes, 3–4 times daily. This helps drain the stye naturally.
• Gentle eyelid massage – After applying warmth, lightly massage the area (avoid squeezing).
• Avoid eye makeup – Prevents further irritation and contamination.
• Over-the-counter pain relief – Acetaminophen or ibuprofen can reduce pain and swelling.

Medical Treatments:

• Antibiotic ointments – Such as erythromycin or bacitracin, applied directly to the eyelid.
• Oral antibiotics – Prescribed if the infection spreads (e.g., dicloxacillin or cephalexin).
• Steroid injections – Rarely used for severe swelling.
• Incision and drainage – Performed by a doctor if the stye doesn’t improve.

Note: Never attempt to pop or squeeze a stye at home, as this can spread the infection.

Living with Eye Stye (Hordeolum)

While styes are usually short-lived, managing symptoms can improve comfort and prevent recurrence.

Daily Management Tips:

• Wash hands frequently, especially before touching the eyes.
• Use a mild, tear-free cleanser to gently clean the eyelids.
• Avoid wearing contact lenses until the stye heals.
• Replace eye makeup (especially mascara) after a stye to prevent reinfection.
• Use artificial tears to relieve dryness and irritation.

Prevention

Good hygiene is the best way to prevent styes. Follow these steps to reduce risk:

• Wash hands before touching eyes – Especially after handling dirty objects.
• Remove makeup before bed – Prevents gland blockages.
• Avoid sharing towels or makeup – Reduces bacterial spread.
• Clean contact lenses properly – Follow your eye doctor’s instructions.
• Manage chronic conditions – Such as blepharitis or rosacea with medical guidance.

Complications

While most styes heal without issues, untreated or severe cases can lead to complications:

• Spread of infection – To other parts of the eyelid (cellulitis) or eye socket.
• Chronic styes – Recurrent infections may require long-term treatment.
• Chalazion formation – A painless cyst that may need medical removal.
• Scarring – Rare, but possible with large or repeatedly drained styes.

When to Seek Emergency Care

Sources: Mayo Clinic, CDC, NIH, WHO, Cleveland Clinic.