Dark circles: when should you be concerned about an underlying condition? Practical guide

Dark circles: dark circles are among the most frequent aesthetic concerns in oculoplastic consultations.

A symptom that can conceal very different causes, from simple tiredness to underlying health problems, including inherited anatomical features.

That is why I always start with a precise diagnosis before considering treatment. Dark circles caused by hyperpigmentation are not treated in the same way as hollow dark circles related to fat loss, still less like vascular dark circles linked to poor circulation.

Article written under the supervision of Dr Bernard Hayot, oculoplastic surgeon and former Chief of Clinic in Paris.

You may not know it, but the eye contour is one of the thinnest areas of the human body. The skin there is four times thinner than elsewhere, and the blood vessels are particularly visible.

When factors such as ageing, oxidative stress or genetic predisposition are added, dark circles become permanent. Some patients come to see me after years of ineffective creams, convinced their problem is purely aesthetic.

That is why I never settle for a simple visual examination. We systematically use tools such as videodermoscopy or spectrophotometric analysis to identify the exact cause.

In this article, I therefore explain what medicine knows about dark circles today.

Their origins, their different forms and, above all, the solutions that exist, from the gentlest to the most interventional. You will see why some techniques, such as lipofilling or fractional lasers, give remarkable results on certain types of dark circles but are completely ineffective on others.

I will also share specific patient cases, such as this 42-year-old woman whose dark circles disappeared once her allergic rhinitis was treated.

Or this 55-year-old man whose gaze was transformed in three weeks by a lower blepharoplasty. Results vary, of course. But one thing is certain: if you have dark circles, you are not condemned to live with them.

Before going further, an important point: pathological dark circles, those accompanied by swelling, itching or abnormally dark colouring, should always be medically assessed. If your dark circles suddenly worsen, or if they come with other symptoms, seek advice without delay. For everyone else, there are now solutions suited to every situation.

Dark circles: when are they a sign of disease?

Benign or pathological dark circles: how to tell them apart?

Benign dark circles are often linked to genetics, tiredness or ageing. They appear as a bluish or purplish hue, particularly visible in the morning, and fade with rest.

Pathological dark circles, on the other hand, persist despite sleep and come with other symptoms. Their colour ranges from brown to grey, and they may be associated with swelling or itching.

Dark circles of medical origin often have an underlying cause. Periorbital hyperpigmentation, for instance, may reveal a chronic allergy, a nutritional deficiency or a metabolic disease.

In patients with darker skin, this hyperpigmentation is more common and more pronounced. Dark circles related to disease do not disappear with conventional cosmetic treatments. They require an accurate diagnosis to be treated effectively.

Warning symptoms not to ignore

Certain signs should alert you and prompt a specialist consultation. If your dark circles come with persistent eyelid swelling, this may indicate water retention related to kidney or heart failure.

A yellowish colouring of the dark circles, combined with intense fatigue, may suggest anaemia or a liver problem. Itching or redness around the eyes, especially if worsened by certain foods or pollens, points towards atopic dermatitis or an allergy.

Tests revealed undiagnosed hypothyroidism. Dark circles can also be the first visible sign of a chronic disease, such as diabetes or venous insufficiency.

Decision tree: when should you consult a specialist?

Here are the situations in which a consultation is essential:
– Your dark circles resist brightening creams and topical treatments after three months of regular use. – They gradually worsen despite an optimal lifestyle (sleep, hydration, balanced diet).

– They come with other symptoms: chronic fatigue, breathlessness, unexplained weight gain or loss.

– You notice changes in the skin texture around the eyes (dryness, flaking, thickening). – The dark circles are associated with under-eye bags that do not subside, even after a night’s rest.

If you have any of these signs, a medical assessment is needed. I always start with a detailed consultation: family history, lifestyle habits, current medication.

A clinical examination allows the colour, depth and distribution of the dark circles to be assessed. If a medical cause is suspected, I order further tests: blood work (ferritin, thyroid, vitamins), allergy testing or an eyelid ultrasound to rule out a venous cause.

This approach is not appropriate if your dark circles are purely cosmetic, with no associated symptoms.

In such cases, non-invasive solutions such as lasers or hyaluronic acid injections may be considered. But if your dark circles come with general signs, do not play them down. They may reflect an internal imbalance that needs to be treated first.

Dark circles: associated diseases and conditions

More serious health problems can lie behind these persistent marks. I see at least two patients a week in consultation whose dark circles reveal an underlying condition. Here is what my clinical experience has taught me about these often overlooked connections.

Anaemia and iron deficiency: a proven link

Pallor of the skin combined with the transparency of the vessels beneath the eyes creates this characteristic dark effect.

I routinely order ferritin testing for patients with purple or bluish dark circles.

Some colleagues are content with local treatment, but I prioritise blood tests from the first consultation. Correcting iron-deficiency anaemia often improves dark circles within four to six weeks, far more effectively than brightening creams.

Her blood work revealed a severe B12 deficiency related to an unsupplemented vegan diet. After three months of treatment, her dark circles had almost disappeared.

Allergies and eczema: chronic inflammation

Periorbital eczema and seasonal allergies are common causes of dark circles. Chronic inflammation dilates the blood vessels and increases capillary permeability.

I often see patients applying corticosteroid creams without success, when a simple oral antihistamine can reduce dark circles within days.

Some colleagues offer chemical peels for these inflammatory dark circles. I am firmly opposed to this. The additional irritation often worsens the inflammation and can trigger contact dermatitis.

A 35-year-old patient had made her dark circles worse after a glycolic acid peel prescribed elsewhere. It took six months of soothing care to restore her eye contour. Precisely identifying the allergen responsible (dust mites, pollen, cosmetics) is far more effective than aggressive local treatments.

Thyroid problems: hypothyroidism and hyperthyroidism

Hypothyroidism causes water retention and swelling of the lower eyelids, creating blue or purple dark circles.

Hyperthyroidism, by contrast, can cause loss of orbital fat and thinning of the skin, accentuating dark circles. Her thyroid workup revealed Graves’ disease.

Once her thyroid was stabilised, her dark circles faded without any local treatment. This condition requires endocrine management before any aesthetic procedure. Local treatments such as fractional lasers are ineffective, and even contraindicated, in these cases.

Liver and kidney disease: subtle but revealing signs

Dark circles can be an early sign of liver or kidney failure.

Toxin retention and poor blood circulation create a characteristic brownish colouring. I routinely suspect a liver problem in patients with brownish dark circles accompanied by morning fatigue and nausea.

Chronic kidney failure can also cause dark circles, through fluid retention and secondary anaemia.

Her blood work revealed a raised creatinine level, confirming early-stage kidney failure. After her nephrological treatment was adjusted, her dark circles faded within three months. It should be noted that these dark circles will not disappear completely without treating the underlying cause.

Some colleagues offer platelet-rich plasma injections or lasers, but I advise against these approaches until the condition is stabilised.

My absolute priority is the medical diagnosis. Once the disease is controlled, dark circles often improve on their own, with no further intervention.

Differential diagnosis is essential. Periorbital hyperpigmentation may look like dark circles, but its origin is different.

I regularly see patients who have spent a fortune on brightening creams when a simple blood test would have revealed a deficiency or a chronic disease. Dark circles are not inevitable, but effective treatment always starts with a thorough investigation of their cause.

How can benign dark circles be told apart from pathological ones?

You look in the mirror in the morning and these shadows under your eyes worry you. Are they normal, or the sign of a deeper problem? I read this question in my patients’ eyes at the first consultation. The answer is not binary, but I will give you clear guidance.

This table summarises the key differences. If your dark circles match the second column, a consultation with an oculoplastic surgeon is strongly recommended. I always start with a detailed medical history and a clinical examination. If necessary, I refer patients to other specialists (endocrinologist, allergist, nephrologist) for a full workup.

In my practice, I combine medical expertise with eyelid & oculoplastic surgery techniques. This dual approach allows me to offer tailored solutions, whether the dark circles are purely aesthetic or linked to a medical condition. For hollow dark circles due to fat loss, for example, I perform a fat graft (lipofilling) to restore volume. For pigmented dark circles, I use fractional lasers to stimulate collagen production and reduce the hyperpigmentation.

But before considering any procedure, I always rule out medical causes. A simple blood test can sometimes avoid unnecessary interventions. My aim is not just to improve the appearance of dark circles, but to treat their underlying cause. That is the difference between a purely cosmetic approach and a medical one.

If your dark circles concern you, do not hesitate to seek advice. A thorough assessment by an oculoplastic surgeon can not only improve your appearance but also, in some cases, detect an underlying health problem. Dark circles are often the visible tip of the iceberg. Treating them effectively means looking beneath the surface.