Festoons and malar mounds: the puffy swelling on the cheekbone below the eye bag

A soft, puffy swelling that sits on the cheekbone, below the eye bag and not in it, is usually not an eye bag at all. It is more often a festoon, also called a malar mound, and the difference matters because the operation that suits an eye bag does not reliably remove a festoon. Three different things can sit under the eye. They look alike in a photograph and behave differently in a surgeon's hands.

What is the difference between an eye bag, fluid puffiness and a festoon?

An eye bag is fat. A festoon is a chronic mound of swollen soft tissue lower down, on the cheek. Fluid puffiness is temporary swelling that comes and goes. All three get called "eye bags" in everyday speech, which is where the confusion starts.

An eye bag is orbital fat that has pushed forward through a weakening orbital septum, the thin membrane that holds the fat behind the lower lid. It sits just above the lid-cheek junction, the line where the lower eyelid meets the cheek. I describe it in my article on eye bags and lower eyelid surgery. Fluid puffiness is the swelling of loose eyelid skin that collects after a night lying flat, a salty meal or an allergy, and I cover its causes in my article on puffy eyelids in the morning.

A festoon is the third thing. EyeWiki, the American Academy of Ophthalmology's clinical wiki, defines festoons, also called malar mounds or malar bags, as redundant, sagging tissue along the lower eyelid and upper cheek, and as a chronic collection of swollen soft tissue over the cheekbone. The name comes from a decorative swag of fabric hanging between two points. EyeWiki separates a festoon from malar oedema, which is transient fluid without the mound shape, and from simple loose skin.

A 2026 review of malar mounds, malar oedema and festoons describes them as a spectrum with overlapping anatomy, and says that overlap complicates diagnosis. It is fair to ask a surgeon exactly what they mean by the word they use.

Why does the swelling sit on the cheekbone, below the eye bag?

Because it forms in a different layer and a different place. The lower eyelid skin is thin and loose. Below the lid-cheek junction the tissue gets thicker, and the soft tissue over the cheekbone is held to the bone by ligaments, among them the orbicularis retaining ligament and the zygomaticocutaneous ligament. The orbicularis is the ring of muscle that closes the eyelids.

EyeWiki lists the changes behind a festoon as weakening of the orbital septum, herniation of orbital fat and altered lymphatic drainage of the lower lid and cheek. Lymphatic drainage is the slow, low-pressure system that carries tissue fluid away. When it works poorly, fluid pools over the cheekbone and the tissue holding it sags into a mound.

What causes festoons?

Several things, usually together. EyeWiki names inherited tendency, sun damage, smoking, ageing, thyroid disease, kidney disease, previous surgery or trauma that disturbed lymphatic drainage, and hyaluronic acid filler, which it says can cause recurrent eyelid oedema by blocking lymphatic drainage.

Sun damage breaks down the collagen and elastin that keep skin firm, and smoking harms its resilience too. Ageing weakens the septum and lets the cheek fat descend. Thyroid and kidney disease can make the body hold fluid. A review in the journal Aesthetic Plastic Surgery also describes festoons in people who have had a puffy area over the cheekbone since childhood, which suggests that for some people the tendency is there from the start.

On the filler point, the wording that matters is neutral. Filler placed near the lower lid is a recognised possible cause of lasting swelling, and I do not read that as a criticism of anyone who injects. I explain why hollowing under the eye is its own subject in my article on tear trough hollowing.

Why does eye bag surgery not remove a festoon?

Because lower blepharoplasty is designed to deal with fat and loose skin at the lid, and a festoon sits lower, in the cheek, and is partly a problem of fluid and ligaments rather than fat. A review in Aesthetic Plastic Surgery states that festoons and malar bags present a particular challenge and commonly persist after traditional lower blepharoplasty. It quotes an older surgical description saying that malar mounds have a notoriety for persisting in the face of surgical efforts to remove them.

The same review says that treating them takes more than the usual lower-lid operation: the lid-cheek junction and the mid-cheek have to be addressed, with techniques such as releasing the retaining ligaments, a midface lift, microsuction or direct excision. In that surgeon's group of 59 patients, the three whose puffiness had been present since childhood needed further treatment after the first operation. It is a small series, not a promise to anyone, and I mention it only to show why a standard eye bag operation cannot be assumed to leave the cheek smooth.

This is the practical reason to get the label right before any procedure. Someone told they have an eye bag, who is actually carrying a festoon, may expect a result the operation was never built to give. A second opinion is a sensible step before any eyelid operation, and I write about it in my article on second opinions before eyelid surgery.

How is a festoon assessed, and what else could it be?

Assessment starts with a history and an examination, and then asks whether something medical is driving the swelling. EyeWiki lists the history as onset and duration, associated symptoms, sun exposure, smoking, underlying thyroid or kidney conditions, and any previous cosmetic procedures such as fillers or toxin. The examination looks at the size, shape and position of the swelling, feels its consistency, checks the skin for sun damage, and looks at lid position, the tear film and eye movement.

The duration of the swelling is a clue. Fluid puffiness that is worst after waking and settles through the morning is a different pattern, as the morning puffiness article explains. A mound that is present all day and has built up over months or years fits the chronic description of a festoon.

Medical causes need a doctor's attention before any cosmetic plan. Thyroid eye disease can make the lids and the tissue around them swell, and I cover its signs in my article on thyroid eye disease. EyeWiki also says imaging such as MRI or CT can be used when a tumour, cyst or vascular malformation has to be excluded, and that a biopsy is considered if the diagnosis is unclear. A single firm or fixed lump is a different question from a soft mound.

What can be done about festoons?

The honest answer from the sources is that options exist and the evidence for most of them is limited. The 2026 review concludes that although a range of treatments has been suggested, supporting evidence remains limited, and treatment has to be tailored to each person. EyeWiki makes the same observation: festoons are common, yet the treatments are under-represented in the scientific literature.

The first step is to deal with anything that can be dealt with. That means treating a thyroid or kidney problem with the doctor who looks after it, protecting the skin from the sun, stopping smoking, and being cautious about filler near the lower lid. EyeWiki adds gentle lymphatic massage to its conservative list. None of these is certain to change the mound.

EyeWiki also describes injections into the mound, with tetracycline-class injections described as showing promise in recent studies. It describes surgical approaches too: direct excision of the excess tissue, lower blepharoplasty adapted to the cheek, midface lift, and a newer minimal-incision technique. It describes surgery as the approach usually pursued after conservative measures prove insufficient, and lists the risks plainly: bleeding, infection, asymmetry, scarring, numbness and an outward-turning lower lid, called ectropion, if too much skin is removed or the support of the lid is weakened. I do not recommend any energy-based device or laser for festoons here. That is a decision for an examining doctor, not an article.

The NHS page on eyelid surgery adds that results vary between people and that a doctor should be consulted first, because a medical condition affecting the eyelids may make surgery unsuitable. The wider picture of why eyes look tired sits in what actually makes eyes look tired.

When should I see a doctor about a swelling under my eye?

See a doctor if the swelling is new, one-sided, hard, growing, painful or red, or if it comes with changes in vision, double vision, a bulging eye, or swelling elsewhere such as the ankles. Those features point away from a simple festoon, and a lump that is firm or fixed needs a proper look and sometimes a scan.

A soft, painless, long-standing mound that bothers only your appearance is not an emergency. It still deserves a correct name before it is treated. Ask whoever examines you whether they mean an eye bag, fluid or a festoon, ask why, and ask what the plan would be if the first treatment did not change the cheek. This article is general information, not a diagnosis. The other aesthetic questions around the lower lid are gathered under periorbital aesthetics.