Bumps under the eyes have several possible causes, ranging from tiny trapped protein cysts to swollen oil glands. Most are harmless and painless, but their appearance, size, and how quickly they developed can tell you a lot about what’s going on. Here’s a breakdown of the most common causes and how to tell them apart.
Milia: Tiny White Bumps Just Below the Surface
Milia are the most common cause of small, painless bumps under the eyes. They look like tiny pearly-white dots sitting just beneath the skin’s surface, and they form when keratin (a protein your skin naturally produces) gets trapped in a small pocket near a hair follicle. Each one is essentially a miniature cyst, usually no bigger than a pinhead.
Milia aren’t caused by dirt or poor hygiene. They can show up after sun damage, heavy moisturizers or eye creams, or minor skin injuries. In many cases there’s no obvious trigger at all. They’re completely harmless and sometimes resolve on their own over weeks or months. If they bother you cosmetically, a dermatologist can extract them with a sterile needle or use a similar in-office technique. Squeezing them at home usually doesn’t work because the cyst wall is harder to break than a regular pimple.
Syringomas: Clusters of Firm, Skin-Colored Bumps
If you notice a group of small, firm bumps clustered under your eyes or on your eyelids, syringomas are a likely explanation. These form from an overgrowth of cells in the eccrine (sweat) glands. Each bump is typically 1 to 3 millimeters across, round, and either yellow, translucent, or matching your skin tone. They tend to appear symmetrically, affecting both sides of the face.
Syringomas are more common in women and often develop during adolescence or early adulthood. They’re benign and don’t become cancerous, but they also don’t go away on their own. Removal options include laser treatment, electrodesiccation (using a small electrical current to destroy the tissue), or minor surgical excision. Because they sit within the skin rather than on top of it, over-the-counter products won’t shrink them.
Xanthelasma: Yellowish Patches Linked to Cholesterol
Xanthelasma looks different from most other under-eye bumps. These are soft, flat or slightly raised yellowish plaques that typically appear along the inner corners of the upper and lower eyelids. They’re made of cholesterol deposits within the skin.
About 50% of people with xanthelasma have abnormal lipid levels, which means the other half have perfectly normal cholesterol. The relationship between these deposits and heart disease risk is less clear-cut than once thought. A large case-control study published through the American Academy of Ophthalmology found that xanthelasma was not reliably associated with elevated risk of dyslipidemia or cardiovascular disease. Still, if you notice these yellow patches forming, getting a lipid panel is reasonable since it may catch a lipid disorder that would otherwise go undetected.
Xanthelasma doesn’t resolve on its own and tends to grow slowly over time. Removal options include laser therapy, chemical peels, surgical excision, or cryotherapy, though recurrence after treatment is common.
Styes and Chalazia: Swollen Eyelid Glands
A stye is a red, painful lump that develops at the base of an eyelash or inside the eyelid. It’s caused by a bacterial infection in a lash follicle or oil gland and feels a lot like a pimple. Most styes come to a head and drain within a few days to a week with warm compresses.
A chalazion looks similar but behaves differently. It forms farther back on the eyelid when an oil-producing gland gets clogged, and it’s usually not painful. Chalazia tend to be firmer and larger than styes, and they can linger for weeks. Warm compresses applied for 10 to 15 minutes several times a day help most chalazia drain naturally. If one persists beyond one to two months, a doctor can drain it in an office procedure that takes about 15 to 20 minutes. After numbing the eyelid, the doctor makes a small incision, drains the fluid, and removes the collected material. Stitches typically aren’t needed.
Sebaceous Hyperplasia: Bumps With a Central Dent
Sebaceous hyperplasia happens when oil glands in the skin enlarge. The bumps are small (usually 2 to 6 millimeters), skin-colored or yellowish, and have a distinctive small dent or indentation in the center. That central dimple is the key visual feature that sets them apart from other under-eye bumps.
These are more common as you age because oil glands can become overactive or enlarged over time. Sun exposure and oily skin increase the likelihood. They’re benign, but because the central indentation can sometimes mimic basal cell carcinoma to an untrained eye, it’s worth having a dermatologist confirm the diagnosis if you’re unsure.
Eyelid Dermatitis: Bumps With Redness and Itching
Not all bumps under the eyes are permanent growths. Eyelid dermatitis causes red, swollen, scaly skin that can include small raised bumps or blisters. It’s triggered by contact with an irritant or allergen, often from skincare products, makeup, fragrances, or even nail polish transferred by touching your face.
The distinguishing feature is that dermatitis comes with symptoms beyond just a bump: stinging, burning, itching, and flaking skin. It can start suddenly or build gradually. Unlike milia or syringomas, eyelid dermatitis is temporary and resolves once you identify and remove the trigger. Keeping the area clean, avoiding suspected irritants, and using a gentle, fragrance-free moisturizer usually helps. Persistent cases may need a short course of a prescription anti-inflammatory cream.
How to Tell These Bumps Apart
The fastest way to narrow down what you’re dealing with is to look at a few key features:
- Size and color: Pearly white pinpoints are likely milia. Yellowish flat patches near the inner eye corners suggest xanthelasma. Skin-colored clusters of 1 to 3 mm bumps point toward syringomas.
- Pain: Painful, red, and swollen means a stye. A firm, painless lump farther back on the eyelid is more likely a chalazion.
- Texture: A bump with a central dent is characteristic of sebaceous hyperplasia. Soft, yellowish plaques suggest xanthelasma.
- Accompanying symptoms: Itching, burning, and scaly skin point to dermatitis rather than a cyst or growth.
Warning Signs That Need Evaluation
Most under-eye bumps are benign, but certain features warrant a closer look. Basal cell carcinoma, the most common eyelid cancer, can appear as a slow-growing lump that bleeds, crusts over, or erodes into surrounding skin. Sebaceous gland carcinoma is rarer and can mimic a chalazion or chronic eye inflammation, which means any “stye” that keeps coming back in the same spot or doesn’t respond to treatment deserves attention.
Red flags to watch for include a bump that bleeds or doesn’t heal, loss of eyelashes near the bump, a growth that changes shape or size noticeably over weeks, or discharge from the area. These don’t automatically mean cancer, but they do mean you should have it examined rather than assume it’s harmless.