Why Do I Have Dark Circles Under My Eyes?
The honest verdict
This is usually not an allergy
Dark circles under the eyes are rarely caused by an allergy. The most common causes are lack of sleep, genetic predisposition (excess pigmentation or deep tear troughs), and age-related thinning of the skin that makes underlying blood vessels more visible. Allergic shiners — a specific type of dark circle caused by nasal congestion from seasonal or year-round allergies — are a real but less common cause. When allergies are the trigger, dark circles typically appear alongside other allergy symptoms such as sneezing, itchy or watery eyes, nasal congestion, or rubbing the eyes frequently.
This is a general research summary, not a diagnosis. It can't tell you what's causing your symptom — a clinician can.
Check this first
When dark circles under eyes is an emergency
Most of the time this can be handled calmly. But a few signs mean you shouldn't wait. Match what you're seeing to the right level of care below.
- Urgent
Dark circles that appear suddenly after a head injury or facial trauma — seek medical evaluation (possible internal bleeding or fracture).
Get seen today — urgent care or same-day visit
- See a doctor
Dark circles accompanied by swelling, redness, pain, or discharge from one or both eyes — see a clinician (possible infection or cellulitis).
Book a routine visit with a clinician
- See a doctor
Dark circles that develop with other concerning symptoms like fever, fatigue, weight loss, or pallor — see a clinician (possible underlying medical condition).
Book a routine visit with a clinician
- See a doctor
Dark circles that are persistent, worsening, or causing significant self-consciousness despite lifestyle changes — see a clinician or dermatologist for evaluation and treatment options.
Book a routine visit with a clinician
When in doubt, err toward getting seen. These tiers are a general guide, not a substitute for a clinician's judgment about your specific situation.
Key facts
Dark circles under the eyes are rarely a medical concern — they are usually a cosmetic issue caused by fatigue, genetics, or aging.
Allergic shiners — dark circles from nasal congestion — are a recognized sign of allergies, especially in children, but they always occur with other allergy symptoms.
Periorbital hyperpigmentation (genetic dark circles) is more common in people with darker skin tones and is not associated with any underlying disease.
What's causing it
The same symptom can come from very different places. Here are the usual suspects for Periorbital area — the skin and tissue beneath and around both eyes, from the lower eyelid to the upper cheek, tagged by mechanism and how common each one is — so you can see where an allergy actually fits.
Fatigue and lack of sleep
Not getting enough sleep causes the skin to become pale and dull, making the blood vessels beneath the eyes more visible and creating a dark or bluish tint. Poor sleep also allows fluid to pool under the eyes, contributing to puffiness that can cast shadows.
Genetics (natural pigmentation or structural anatomy)
Some people inherit a tendency toward darker pigmentation under the eyes (periorbital hyperpigmentation) or naturally deeper tear troughs that create shadowing. This is more common in people with darker skin tones and is not a medical concern.
Aging (thinning skin and volume loss)
As skin ages, it loses collagen and fat, becoming thinner and more translucent. This makes the underlying blood vessels and muscles more visible, creating a dark or hollow appearance under the eyes. Volume loss in the cheeks can also deepen the tear trough shadow.
Dehydration and lifestyle factors
Dehydration makes the skin under the eyes look sunken and dull, emphasizing dark circles. Excessive screen time, alcohol consumption, smoking, and a diet high in salt can also contribute by affecting circulation, fluid balance, and skin health.
Allergic shiners (nasal congestion from allergies)
Seasonal or year-round allergies cause nasal congestion that restricts blood flow from the area around the eyes, causing blood to pool and create a dark, puffy appearance known as allergic shiners. This is accompanied by other allergy symptoms like sneezing, itchy eyes, nasal congestion, and frequent eye rubbing.
Is this an allergy? Usually, no
It's a common assumption, so it's worth being clear about — and pointing you toward what's more likely going on.
Dark circles under the eyes are usually not an allergy. The most common causes are fatigue, genetics, aging, and lifestyle factors. Allergic shiners — dark, puffy circles caused by nasal congestion from seasonal or year-round allergies — are a real but less common cause. When allergies are the trigger, dark circles typically appear alongside other allergy symptoms such as sneezing, itchy or watery eyes, nasal congestion, or frequent eye rubbing. Managing underlying allergies with antihistamines or avoiding allergens can help reduce allergic shiners, but for most people, dark circles have a non-allergic cause.
Because an allergy is unlikely to be the driver, the most useful next step is a clinician who can look at the actual cause — not an allergy test.
Relief you can try at home
If your symptom is mild and you have no red-flag signs, these gentle steps often help. They soothe — they don't replace figuring out the cause.
- 1
Prioritize sleep
Aim for 7-9 hours of quality sleep per night. Elevating your head slightly with an extra pillow can help prevent fluid from pooling under the eyes overnight.
- 2
Stay hydrated and reduce salt
Drink adequate water throughout the day and limit salty foods, which can cause fluid retention and make dark circles more noticeable.
- 3
Apply a cold compress
A chilled compress, cold cucumber slices, or chilled tea bags placed over closed eyes for 10 minutes can constrict blood vessels and reduce puffiness and the appearance of dark circles.
- 4
Use a moisturizing eye cream
A gentle, fragrance-free eye cream with ingredients like caffeine, vitamin C, or hyaluronic acid can temporarily tighten skin, brighten the area, and improve hydration. Results are modest and temporary.
- 5
Manage allergies if present
If you have seasonal allergies, managing them with antihistamines (as directed by a clinician) and avoiding eye rubbing can reduce allergic shiners. A clinician can recommend appropriate allergy treatment.
Stop any step that makes things worse. If the symptom isn't easing within a few days, check in with a clinician.
When to see a doctor
See a clinician if dark circles appear suddenly after a head injury or facial trauma, or if they are accompanied by swelling, redness, pain, discharge from the eyes, or other concerning symptoms like fever, fatigue, or unexplained weight loss. For persistent dark circles that do not improve with rest, hydration, or lifestyle changes, a dermatologist or primary care clinician can evaluate for underlying causes and discuss treatment options such as topical brightening agents, chemical peels, or fillers for structural shadowing.
❓Frequently Asked Questions
Yes, but it is not the most common cause. Allergic shiners are dark, puffy circles under the eyes caused by nasal congestion from seasonal or year-round allergies. The congestion restricts blood flow from the area around the eyes, causing blood to pool and create a dark appearance. Allergic shiners are almost always accompanied by other allergy symptoms like sneezing, itchy or watery eyes, nasal congestion, or frequent eye rubbing.
In most cases, no — dark circles are a cosmetic concern, not a medical one. They are usually caused by fatigue, genetics, aging, or lifestyle factors. However, if dark circles appear suddenly after a head injury, or are accompanied by swelling, pain, discharge, fever, or unexplained weight loss, they may signal an underlying condition that needs medical evaluation.
Yes — lack of sleep is one of the most common causes. When you are sleep-deprived, the skin becomes pale and dull, making the blood vessels beneath the eyes more visible and creating a dark or bluish tint. Poor sleep also allows fluid to pool under the eyes, contributing to puffiness that can cast shadows. Improving sleep often reduces the appearance of dark circles.
Yes, genetics play a significant role. Some people inherit a tendency toward excess pigmentation under the eyes (periorbital hyperpigmentation) or naturally deeper tear troughs that create shadowing. This is more common in people with darker skin tones and is not a medical concern. If your parents have dark circles, you are more likely to have them too.
The best treatment depends on the cause. For fatigue-related circles, improving sleep and hydration is most effective. For genetic pigmentation, topical brightening agents (vitamin C, retinoids, kojic acid) or chemical peels may help. For structural shadowing from deep tear troughs, dermal fillers can provide cosmetic improvement. A dermatologist can evaluate the cause and recommend the most appropriate treatment.
Medically reviewed by
Dr. Chet TharpeMD
Last reviewed July 2026
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This symptom is usually not driven by an allergy, so an allergy test won't give you the answer. A primary care doctor or the right specialist can examine what's actually going on and guide you from there.
Curex focuses on at-home allergy testing and immunotherapy, which isn't the right fit for this symptom — and never a substitute for medical care.
This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. It cannot tell you what is causing your dark circles under eyes or whether it is an allergy. If you have any emergency sign — trouble breathing, fast-spreading swelling, sudden weakness or confusion, or severe pain — call 911 or go to the nearest emergency room. For anything that is new, worsening, or persistent, see a licensed healthcare provider. Curex focuses on at-home allergy testing and immunotherapy, which is not the appropriate care for this symptom and never a substitute for a clinician.