A stye looks like a red, swollen bump on the edge of your eyelid, similar in appearance to a pimple. It typically has a visible yellow or white pus spot at its center and forms right at the base of your eyelashes. Styes are one of the most common eyelid problems, and while they can look alarming, most resolve on their own within a week or two.
What a Stye Looks Like Up Close
The hallmark of a stye is a small, raised, red lump that sits along the eyelid margin where your lashes grow. It’s tender to the touch and often develops a visible head of pus at its center, much like a whitehead. The surrounding skin appears red and inflamed, and in many cases the swelling spreads beyond the bump itself, puffing up a larger portion of the eyelid or even the entire lid.
Beyond the bump itself, you may notice yellow pus discharge crusting along your lash line, especially after sleep. Your eye might water more than usual on that side, and the skin around the bump can look shiny or tight from the swelling.
External vs. Internal Styes
The bump most people picture when they think of a stye is the external type. It forms in the tiny oil glands that sit right at the root of your eyelashes, so it’s clearly visible on the outer surface of your eyelid. When it drains, pus comes out along the lash line.
An internal stye looks different because it develops on the underside of the eyelid, in the deeper oil glands embedded in the lid itself. You might not see a defined bump on the outside. Instead, you’ll notice generalized eyelid swelling and feel a painful, tender area. Flipping the eyelid reveals a red, raised spot on the inner surface. Internal styes drain inward toward the eye rather than outward through the skin, so you’re more likely to notice discharge on the surface of your eye or pooling in the corner.
How a Stye Differs From a Chalazion
A chalazion is the condition most often confused with a stye, and the two can look quite similar at first glance. The key differences come down to location, pain, and behavior.
- Location: A stye sits right at the eyelid’s edge near the lashes. A chalazion usually forms farther back on the lid, away from the lash line.
- Pain: A stye is very painful from the start. A chalazion is typically painless or only mildly tender.
- Swelling pattern: A stye often makes a large portion of the eyelid swell. A chalazion tends to stay a well-defined, firm lump without much surrounding puffiness.
- Cause: A stye is an active bacterial infection. A chalazion is a blocked oil gland that becomes inflamed but isn’t necessarily infected.
Sometimes a stye that doesn’t fully drain turns into a chalazion over time. If your bump was painful at first but gradually became a painless, firm nodule, it has likely transitioned from one to the other.
Other Symptoms That Come With a Stye
The visible bump is just one part of the picture. Most people with a stye also experience a scratchy, gritty sensation, as if something is stuck in the eye. Light sensitivity is common, particularly with larger styes that press on the surface of the eye. Crustiness along the eyelid margin, especially when you wake up, is typical. Your eye may tear excessively on the affected side as your body tries to flush out the irritation.
Styes go through a predictable visual progression. They start as a small, tender red area that may be easy to miss. Over a day or two, the bump becomes more defined and swelling increases. A pus head usually forms within a few days. Eventually the stye either drains on its own or the body reabsorbs it, and the swelling gradually goes down. The whole cycle runs about one to two weeks.
What It Looks Like When a Stye Gets Worse
Most styes stay contained to a small area and heal without trouble. But certain visual changes signal that the infection may be spreading. If the redness and swelling extend well beyond the bump to involve the entire area around your eye socket, especially with fever or pain that worsens rather than improves, the infection may have spread to the surrounding skin tissue. This condition, called periorbital cellulitis, needs prompt medical treatment.
Other warning signs include vision changes, the eye itself appearing to bulge forward, or pain when moving the eye. These suggest the infection has moved deeper and requires emergency care. In children, a fever combined with swelling around the eye socket is especially important to act on quickly.
Warm Compresses and What to Expect
The standard home treatment for a stye is a warm compress: a clean washcloth soaked in warm water, held against the closed eyelid for 10 to 15 minutes several times a day. The heat increases blood flow to the area and helps the blocked gland open and drain. You’ll often see the pus head become more prominent before the stye ruptures and releases a small amount of yellowish fluid.
Resist the urge to squeeze or pop a stye. Forcing it open can push the infection deeper into the eyelid or spread bacteria to other glands. Let it drain on its own. Once it does, the pain and swelling typically drop off quickly. Keep the eyelid clean, avoid wearing eye makeup or contact lenses while the stye is active, and wash your hands before touching the area.
If the stye hasn’t improved after two weeks of warm compresses, or if it keeps coming back in the same spot, a doctor can drain it with a small incision or prescribe treatment for an underlying issue like chronic eyelid inflammation (blepharitis) that makes styes more likely to recur.