Dark, puffy, or bruised-looking skin around one or both eyes can appear even when you haven’t been hit or injured. The skin surrounding your eyes is some of the thinnest on your body, with very little fat underneath, which makes it especially quick to show changes in blood flow, fluid buildup, or volume loss. The cause ranges from something as common as allergies to rarer conditions that need medical attention.
Allergies and Sinus Congestion
One of the most common reasons for a bruised look around the eyes is nasal congestion, often from allergies. When your immune system reacts to an allergen, the moist lining inside your nose swells. That swelling slows blood flow in the veins near your sinuses, and those veins sit very close to the surface of the thin skin under your eyes. When they become engorged, the area looks darker and puffy. Doctors sometimes call this an “allergic shiner.”
Allergic shiners typically affect both eyes and look worse in the morning or during allergy season. They can also develop with chronic sinusitis, colds, or any condition that keeps your nasal passages congested for days or weeks at a time. If the dark circles come and go with stuffiness or sneezing, congestion is the likely culprit. Treating the underlying nasal swelling with antihistamines or nasal sprays usually improves the appearance.
Aging and Volume Loss
As you get older, the fat pads that cushion the area beneath your eyes shrink and shift downward. The ligaments holding tissue in place weaken, and the bone beneath your lower eyelid gradually resorbs. This creates a hollow groove, sometimes called a tear trough, that casts a shadow and gives the appearance of permanent dark circles or sunken, bruised-looking eyes.
Because the skin in this area has almost no subcutaneous fat to begin with, even small amounts of volume loss are visible. The result is a shadowed, tired look that can resemble a mild black eye, especially under certain lighting. This is a structural change, not a sign of disease, and it tends to become more noticeable from your late 30s onward. Dermal fillers can restore volume in this area if the appearance bothers you.
Easy Bruising From Medications or Nutrients
Blood thinners, aspirin, and even long-term use of corticosteroid creams near the eyes can make the tiny blood vessels around your orbit more fragile. A minor bump you barely notice, rubbing your eyes in your sleep, or even a hard sneeze can rupture small vessels and leave a bruise that seems to appear out of nowhere.
Nutritional deficiencies play a role too. Vitamin C is essential for building collagen in your skin and blood vessel walls. When levels drop low enough, capillaries become fragile and bleed easily, sometimes showing up as bruising around the eyes or elsewhere on the body. Vitamin K deficiency impairs your blood’s ability to clot normally, which can also lead to unexplained bruising or hemorrhages near the eyes. If you bruise easily and frequently without obvious trauma, those nutrient levels are worth checking.
Serious Conditions Worth Knowing About
In most cases, a black-eye appearance without injury is harmless. But certain medical conditions can produce what doctors call “raccoon eyes,” dark bruising around both eye sockets that signals something deeper.
- Skull base fracture: A fracture at the base of the skull, sometimes from a fall or impact you may not remember clearly, can cause blood to pool around both eyes over the following hours or days. This can also mean brain fluid is leaking, raising the risk of serious infection.
- Amyloidosis: This condition involves abnormal protein deposits in tissues. When it affects blood vessels near the eyes, even minor straining (coughing, bending over) can cause bilateral bruising.
- Bleeding disorders: Conditions like hemophilia prevent blood from clotting properly, leading to spontaneous bruising, including around the eyes.
- Liver disease: Your liver produces clotting factors. When it’s damaged, you bruise more easily throughout the body, and the thin skin around the eyes shows it first.
- Certain cancers: Neuroblastoma (especially in children), multiple myeloma, and Kaposi sarcoma can all produce periorbital bruising as an early sign.
Raccoon eyes appearing without a clear cause, particularly around both eyes simultaneously, warrant prompt medical evaluation. They can indicate increased pressure inside the skull, which is a medical emergency.
When Swelling and Redness Point to Infection
A swollen, discolored eye can sometimes be orbital cellulitis, a serious infection that spreads from the sinuses into the tissue surrounding the eye. This is more common in children and adolescents. Symptoms include a bulging eye, pain when moving the eye, impaired vision, redness or discoloration around the socket, and fever.
Orbital cellulitis is not subtle. It progresses quickly and can threaten your vision if the swelling compresses the optic nerve or cuts off blood flow. If you or your child has a swollen, bulging eye with fever or vision changes, that combination needs emergency care. A sinus infection that seemed routine can occasionally push into the orbit, so worsening eye swelling during a bout of sinusitis is a red flag.
Other Common Explanations
Several everyday factors can make the under-eye area look darker or puffier without any underlying disease. Sleep deprivation causes blood vessels under the eyes to dilate, making dark circles more visible against pale, fatigued skin. Dehydration has a similar effect by making the hollows under your eyes more pronounced. Excessive salt intake leads to fluid retention, and that fluid gravitates to the loose tissue around the eyes overnight, creating morning puffiness that can look bruise-like in certain light.
Genetics also matter. Some people simply have thinner skin, more visible blood vessels, or deeper-set eyes that naturally cast shadows. If one or both parents have prominent dark circles, there’s a good chance yours are inherited rather than caused by a medical problem. Hyperpigmentation, where the skin around the eyes produces more melanin, is another common and harmless cause that’s particularly prevalent in people with darker skin tones.
How to Tell What’s Causing Yours
A few clues help narrow it down. If the discoloration affects both eyes and worsens with congestion or seasonal allergies, sinus-related venous pooling is the most likely answer. If it appeared gradually over months or years, aging-related volume loss or genetics are probable. If it showed up suddenly on one side, consider whether you might have bumped your face without realizing it, or whether you’re taking a medication that promotes bruising.
The situations that call for medical attention are more specific: bruising that appeared suddenly around both eyes without any injury, bruising accompanied by a severe headache or confusion, a bulging or painful eye with fever, vision changes alongside the swelling, or easy bruising that keeps showing up across your body. These patterns suggest something beyond cosmetics and are worth investigating sooner rather than later.