A stye looks like a small pimple on your eyelid. It typically appears as a red, swollen, tender bump right along the edge of the lid, often near the base of an eyelash. As it develops, you may notice a visible white or yellow pus point at its center, similar to a whitehead. Most styes are small, roughly the size of a pea or smaller, and they’re almost always limited to one spot on one eyelid.
What a Stye Looks Like Up Close
In its earliest stage, a stye often starts as a subtle area of redness and tenderness on the eyelid margin. Within a day or two, it grows into a clearly defined nodule, red and swollen, that’s easy to spot in the mirror. The surrounding skin may look slightly puffy, and in some cases the swelling spreads across more of the eyelid.
As the infection matures, a small pus point often develops at the surface of the bump. This is the most distinctive visual feature of a stye: a localized pustule sitting right at the lash line. Some styes drain on their own after a few days, releasing a small amount of pus or fluid, then shrink quickly. Others stay sealed and gradually reabsorb over a week or so. The whole process from first redness to resolution typically takes about seven to ten days.
External vs. Internal Styes
The bump most people picture is an external stye, which forms in an eyelash follicle or one of the small oil glands right at the lid margin. It’s visible on the outer surface of the eyelid and easy to identify because you can see the pustule directly.
An internal stye forms deeper inside the eyelid, in one of the oil-producing glands embedded in the lid tissue. You may not see a bump on the outside at all. Instead, the eyelid feels swollen and sore, and flipping the lid reveals a small pustule on the inner (conjunctival) surface. Internal styes tend to cause more generalized eyelid puffiness because the infection sits deeper, making them harder to distinguish visually from other causes of eyelid swelling.
Other Symptoms Beyond the Bump
A stye isn’t just a bump. You’ll likely notice several other things happening around the affected eye:
- Eyelid swelling that can range from mild puffiness to the entire lid looking droopy or half-shut
- Crusting along the lash line, especially after sleep
- Extra tearing from the irritated eye
- A gritty or scratchy sensation, like something is stuck under your lid
- Light sensitivity in the affected eye
- Soreness and itching around the bump itself
Discharge is common, particularly with external styes. You might notice a yellowish fluid on your lashes when you wake up.
Stye vs. Chalazion
The bump most often confused with a stye is a chalazion, and the two look different once you know what to check. A stye is red, tender, and sits right at the eyelid edge near the lashes. It hurts when you touch it and often has that telltale pus point.
A chalazion forms farther from the lid margin, deeper in the eyelid tissue, and usually isn’t very tender. It feels like a firm, round, pea-sized lump under the skin rather than an angry pimple. Chalazia tend to develop more slowly and don’t have the acute redness and soreness of a fresh stye. That said, a stye that doesn’t drain can sometimes turn into a chalazion over time as the infection resolves but leaves behind a blocked, swollen gland.
What Causes That Bump
Styes are bacterial infections, almost always caused by staph bacteria that live naturally on your skin. The bacteria get trapped in an oil gland or hair follicle along the eyelid, triggering a localized infection. Risk factors include touching your eyes with unwashed hands, leaving eye makeup on overnight, and having a history of the skin condition blepharitis (chronic inflammation of the eyelid margin). People who’ve had one stye are more likely to get another.
Signs the Infection May Be Spreading
A typical stye stays contained to one small area and resolves on its own. But in rare cases, the infection can spread beyond the bump into the surrounding tissue of the eyelid and face, a condition called periorbital cellulitis. Warning signs include redness and swelling that extend well beyond the original bump, spreading across the eyelid or onto the cheek, along with fever or increasing pain over several days rather than gradual improvement.
More serious progression can push the infection deeper behind the eye, causing the eyeball to bulge forward, difficulty moving the eye, or changes in vision. These symptoms are rare but require urgent medical attention. If swelling from a stye keeps getting worse after two to three days, or if you develop any vision changes, that’s a signal the infection has moved beyond what a simple stye does.
Helping a Stye Heal
The single most effective thing you can do is apply a warm compress. Soak a clean washcloth in warm water, wring it out, and hold it against the closed eyelid for 10 to 15 minutes, three to four times a day. The warmth increases blood flow and encourages the blocked gland to open and drain. Most styes resolve within one to two weeks with this approach alone.
Avoid squeezing or popping a stye. Forcing it open can push bacteria deeper into the tissue and worsen the infection. Skip contact lenses and eye makeup until the stye has fully healed, since both can reintroduce bacteria and slow recovery. If a stye hasn’t improved after about two weeks of consistent warm compresses, or if it keeps growing, a doctor can drain it with a small in-office procedure that takes only a few minutes.