A visible dent or indentation on the nose usually signals that something has changed in the cartilage, bone, or soft tissue that gives the nose its shape. The cause can be as straightforward as an old injury you barely remember or as complex as an autoimmune disease quietly eroding cartilage from the inside. Because the nose is essentially a tent of skin draped over a fragile scaffolding of bone and cartilage, even small losses of structural support can produce a noticeable concavity, and the location and depth of the dent often point directly to what went wrong.
The Scaffolding Under the Skin
Your nose gets its three-dimensional shape from a framework of bone at the top and cartilage farther down. The upper third is hard bone fused to the skull. Below that, paired pieces of cartilage called the upper lateral cartilages fan out from the septum (the central wall dividing your two nostrils) and form the middle third of the nose. The lower third is shaped by yet another set of cartilages that define the tip. Covering all of this is a layered soft-tissue envelope: skin, a superficial fat layer, a thin fibromuscular sheet, a deeper layer of fat and muscle, and then the skeleton underneath.
That fibromuscular sheet acts as a cushion separating the skin from the rigid framework. When it is intact, the skin glides over the cartilage smoothly. When it is disrupted, the skin can stick directly to the skeleton beneath it, creating visible irregularities and contour problems on the surface.
Trauma Is the Most Common Culprit
Because the nose sits at the center of the face with very little padding, it takes the brunt of many facial injuries. A blow to the nose from a fall, a car accident, a sports collision, or a fight can fracture the nasal bones, buckle the septum, or crush the cartilage in the middle vault. If the septum fractures and a blood clot (septal hematoma) forms but goes untreated, the cartilage can lose its blood supply and die, leaving a gap in the structural support. The bridge of the nose then sinks inward, producing the classic “saddle nose” deformity, so named because the profile looks like the dip in the middle of a horse saddle.
Not every post-trauma dent is dramatic. A mild displaced fracture that heals slightly off-center can leave behind a subtle depression on one side of the bridge. Scar tissue inside the nose can contract over months and pull structures inward in ways that were not obvious right after the injury. This is why some people notice a dent appearing weeks or even months after a hit to the face, not immediately afterward. If you have a dent you cannot explain, it is worth thinking back to any facial trauma, even years earlier, that you might have dismissed at the time.
Dents That Appear After Nose Surgery
Rhinoplasty, whether performed for cosmetic or functional reasons, involves reshaping the very framework that holds the nose up. When surgeons reduce a dorsal hump (the bump on the bridge), they remove a strip of cartilage and bone along the top of the nose. This can destabilize the upper lateral cartilages, which normally spread outward from the septum like the top of the letter T. Once the T-shaped connection is disrupted, those cartilage pieces lose their anchor and drift inward, backward, and upward into a “relaxed” position, creating a visible step-off between the nasal bones above and the cartilage below.
Surgeons call this the inverted-V deformity because the shadow it casts on the nose resembles an upside-down V. The mechanism is essentially a spring being released: the cartilages were held under tension by their attachment to the septum, and once that attachment is cut, they snap into a narrower position, leaving a depression where the bridge should look smooth.
A related post-surgical problem is dorsal indentation, a dip along the bridge line itself. In one study of preservation rhinoplasty (a newer technique that tries to keep more of the natural framework intact), dorsal indentation still occurred in about five percent of patients, making it the second most common complication after residual hump.
These surgical dents do not always show up right away. Swelling masks them for weeks or months, and as scar tissue matures and contracts over the first year, the indentation can become more pronounced. Surgeons sometimes use spreader grafts, small strips of cartilage placed between the septum and the upper lateral cartilages, to prevent the collapse. When the problem has already occurred, revision surgery is typically needed.
Autoimmune and Inflammatory Diseases
Some of the most striking nasal dents come not from external damage but from the body’s own immune system attacking nasal cartilage. Two conditions stand out here.
Granulomatosis with polyangiitis (formerly called Wegener’s granulomatosis) is an autoimmune disease that inflames blood vessels throughout the body. It has a particular affinity for the nose, sinuses, and lungs. The inflammation destroys cartilage and bone inside the nose, often starting with the septum. Over time, the bridge collapses into a saddle deformity. Saddle nose is so strongly associated with this disease that it is considered one of its hallmarks.
Relapsing polychondritis is rarer but attacks cartilage even more directly. In this condition, immune cells infiltrate the cartilage itself, breaking down the structural proteins that keep it firm. The cartilage loses its rigidity and eventually dissolves. Because the ears and nose contain the most exposed cartilage in the body, they are hit earliest and hardest. The nasal septum can be destroyed before the diagnosis is even made, leaving a collapsed bridge.
Both conditions tend to produce other symptoms alongside the nasal dent: joint pain, eye redness, hearing changes, or recurring sinus infections. If a dent appears on your nose without any history of trauma or surgery and is accompanied by fatigue, joint problems, or unexplained inflammation elsewhere, these autoimmune conditions deserve investigation.
Infections and Substance Use
Before antibiotics became widely available, certain infections were a leading cause of nasal collapse. Tertiary syphilis, the late stage of untreated syphilis infection, causes a destructive process called gumma formation. Gummas are masses of inflamed tissue that erode into bone and cartilage, and they favor the nasal septum, particularly the junction where the cartilaginous and bony portions meet. The destruction of this junction perforates the septum and takes away the support for the bridge, producing a saddle deformity that was once so common it became almost synonymous with the disease.
Syphilis-related nasal collapse is now rare in developed countries because the infection is usually caught and treated much earlier. It still occurs, however, in settings where syphilis goes undiagnosed for years.
Chronic cocaine use produces a strikingly similar pattern of damage through a different mechanism. Cocaine is a potent vasoconstrictor: it squeezes blood vessels shut. When snorted repeatedly, it starves the septal lining of blood flow, causing the tissue to die and the cartilage beneath it to erode. The result is a complex of nasal collapse, septal perforation, palatal retraction, and ulceration of the throat wall.
The cocaine-related dent tends to develop gradually, and users may not connect the worsening nasal shape to their habit until significant cartilage has already been lost. By that point, the septum may be perforated and the bridge visibly depressed.
Congenital and Developmental Causes
Some people are born with a flat or indented nasal bridge. A condition called Binder syndrome (also known as nasomaxillary hypoplasia) involves underdevelopment of the premaxillary area and the nasal skeleton. The nose appears broad and flat, with a notably short columella (the strip of tissue between the nostrils) and a concave facial profile. Because the nasal bones and cartilages simply did not grow to their full size during fetal development, the bridge lacks the projection that would give the nose its typical contour.
Congenital nasal dermoid cysts are another developmental consideration, though they produce a bump more often than a dent. These are small growths containing skin, hair follicles, and sometimes fatty tissue trapped beneath the nasal skin during embryonic development. They typically present as a swelling or a tiny opening (sinus tract) on the nose in young children. While they do not usually cause a concavity on their own, surgical removal can leave behind a subtle indentation if the underlying bone was involved.
Certain genetic syndromes involving broader craniofacial underdevelopment also feature a flat nasal bridge as one component of a larger pattern. In these cases the nasal dent is present from birth and is noticed by parents or pediatricians early on, unlike acquired dents that develop later in life.
Aging and Soft-Tissue Changes
The nose continues to change throughout your life. Cartilage weakens with age as it loses water content and the collagen fibers stiffen. The tip of the nose tends to droop, and the skin thins. While aging alone rarely creates a dramatic dent in the bridge, it can unmask underlying asymmetries or minor structural weaknesses that were not visible when the skin was thicker and the cartilage was firmer. Someone who had a minor septal deviation from an old injury might notice for the first time in their fifties that one side of the bridge looks slightly concave.
Gravity and repeated mechanical stress over decades also play a role. People who habitually push up on the tip of their nose, wear heavy glasses, or use CPAP masks for sleep apnea sometimes develop a small indentation at the spot where pressure is concentrated. These pressure-related changes are subtle and usually only noticeable to the person experiencing them, but they can be genuinely distressing once noticed.
When the Dent Might Not Be What You Think
Not every perceived dent reflects an actual structural change. The nose has complex surface topography with highlights and shadows that shift depending on lighting, angle, and even hydration. Under certain lighting, a perfectly normal nose can appear to have a concavity that vanishes when you step into different light.
Body dysmorphic disorder (BDD) adds another layer. People with BDD focus intensely on perceived flaws in their appearance that others do not notice or consider minimal. Research on BDD has found that it involves real differences in visual processing: people with the condition tend to over-focus on fine detail while under-processing the overall shape of what they are looking at. This means they can perceive tiny surface irregularities on their nose as prominent dents. The nose is one of the most commonly fixated-on features in BDD, in part because it sits at the center of the face and is visible in every mirror and photograph.
If you find yourself spending significant time examining a nasal dent that friends and family cannot see, or if photographs from various angles show a smooth bridge that contradicts what you see up close in the mirror, it is worth discussing this pattern with a mental health professional before pursuing surgical consultations. Rhinoplasty in the setting of unrecognized BDD often leads to dissatisfaction regardless of the surgical outcome.
Treatment Options for Structural Dents
When the dent is real and structural, the approach depends on its severity and cause.
For mild to moderate saddle nose deformities, cartilage grafting is the standard surgical approach. The surgeon harvests cartilage from the patient’s own septum, ear, or rib and uses it to rebuild the collapsed bridge. Autogenous (your own tissue) cartilage grafts have a long track record: they integrate well, maintain their shape over time, and rarely cause rejection. Both block cartilage grafts and diced cartilage grafts have been used successfully for dorsal augmentation, with diced cartilage offering a more easily contoured option for mild deformities.
Severe saddle deformities, particularly those caused by autoimmune disease where cartilage destruction may be ongoing, present a harder problem. Rib cartilage grafts provide more material and structural strength, but the surgery is more involved. The underlying disease must also be well controlled before reconstruction makes sense, because active inflammation will simply destroy the new graft.
For people who want a less invasive option, or who need a temporary fix while awaiting surgery, injectable hyaluronic acid fillers can camouflage a mild dent. The filler is placed along the dorsum to smooth the contour. This is quick, requires no downtime, and is reversible. Hyaluronic acid fillers are generally considered safe and effective for this purpose.
However, the nose is a high-risk zone for filler injections because of the blood supply that runs through it. In rare cases, filler can compress or enter a blood vessel and block flow to the skin, causing tissue death (necrosis). This risk makes it critical to choose an experienced injector who understands nasal vascular anatomy and keeps the enzyme hyaluronidase on hand as an antidote.
Figuring Out What Caused Your Dent
A doctor evaluating a nasal dent will usually start by asking about trauma history, prior nasal surgery, drug use, and any systemic symptoms like joint pain, rashes, or recurrent infections. A physical exam can reveal whether the depression involves bone, cartilage, or just soft tissue. If the septum is perforated (a hole between the two nasal passages), that narrows the possible causes considerably, pointing toward cocaine use, autoimmune disease, or prior surgery rather than simple aging.
Imaging is not always needed for a straightforward traumatic dent, but a CT scan can be useful when the cause is unclear or when surgery is being planned. Blood tests for autoimmune markers (such as ANCA antibodies, which are associated with granulomatosis with polyangiitis) are warranted when the dent appeared without trauma and other inflammatory symptoms are present.
For children born with a flat nasal bridge, the evaluation includes ruling out intracranial connections in the case of midline nasal masses and assessing for broader craniofacial syndromes that might affect growth and dental development.
Glasses, CPAP Masks, and Other Everyday Pressure Sources
One of the more overlooked causes of nasal indentations is chronic external pressure. Heavy eyeglasses that rest on the bridge of the nose can, over years, compress the soft tissue and even remodel the cartilage slightly beneath them. The result is a pair of shallow depressions on either side of the bridge corresponding to where the nose pads sit. These are usually visible only when the glasses are removed and tend to be more pronounced in people with thin skin or less subcutaneous fat on the nose.
CPAP masks used for obstructive sleep apnea present a similar issue. A mask that presses firmly on the nasal bridge for eight hours every night, year after year, can leave a persistent indentation. Switching to a mask style that distributes pressure more broadly, or using nasal pillows that bypass the bridge entirely, can prevent this from worsening. The indentation itself may partially recover once the pressure source is removed, though cartilage remodeling from long-term compression does not always fully reverse.
Nose piercings, particularly bridge piercings that pass through the skin and soft tissue at the top of the nose, can also leave behind a small dent if the jewelry migrates or the piercing is removed after being in place for a long time. The scar tissue that forms contracts inward and pulls the surface with it. This tends to be a small and localized indentation rather than a broad depression across the bridge.