A septal perforation is a hole in the nasal septum, the wall of cartilage and bone that divides your nose into left and right sides. The hole can range from a few millimeters to several centimeters wide, and depending on its size and location, it can cause anything from a faint whistling sound when you breathe to persistent crusting, nosebleeds, and difficulty breathing through your nose. Some small perforations cause no symptoms at all and are discovered incidentally during a routine exam.
What the Septum Does and Why a Hole Matters
Your nasal septum is more than a divider. It provides structural support for the bridge of your nose and helps direct airflow evenly through both nostrils. The septum is made of cartilage in the front and thin bone toward the back, all covered by a moist lining called mucosa. That lining is critical because it supplies blood to the underlying cartilage. When the lining is damaged on both sides of the septum in the same spot, the cartilage between loses its blood supply, dies, and breaks down, leaving a hole.
Once a perforation forms, the edges of the hole are exposed to fast-moving, turbulent air with every breath. This dries out the tissue, encourages crusting, and can gradually enlarge the hole over time if the cause isn’t addressed.
Common Causes
The single most recognized risk factor is cocaine use. Cocaine constricts blood vessels in the nasal lining, starving the cartilage of oxygen and nutrients. Repeated use can erode through the septum surprisingly quickly. But cocaine is far from the only cause.
Prior nasal surgery is another leading contributor. Septoplasty (surgery to straighten a deviated septum) and other procedures inside the nose can damage the lining on both sides, setting the stage for a perforation weeks or months later. Nasal trauma from injuries, nose picking, or even aggressive use of nasal oxygen tubing can do the same thing.
Chronic use of certain nasal sprays also carries risk. Vasoconstrictive decongestant sprays (the kind that shrink swollen tissue for fast relief) and corticosteroid sprays can both cause perforations with prolonged use. The decongestants reduce blood flow to the lining, while steroid sprays can thin the tissue over time. Autoimmune and inflammatory diseases, particularly a condition called granulomatosis with polyangiitis (formerly Wegener’s), can attack the blood vessels in the nasal lining and cause perforations as well. In many cases, no clear cause is ever identified.
How It Feels
Small perforations often announce themselves with a whistling noise during breathing. The air passing through the narrow hole creates the sound, and it can be noticeable enough that other people hear it too. Beyond the whistle, the most common symptoms are crusting around the edges of the hole and repeated nosebleeds. The crusting happens because the exposed edges dry out, and picking at those crusts tends to cause bleeding and further enlargement of the perforation.
Larger holes may not whistle (the opening is too wide to produce the sound), but they disrupt airflow more significantly. You might feel a persistent sense of nasal obstruction, dryness, or a foul odor from the crusting. Very large perforations, particularly those over 2 centimeters, can weaken the structural support of the nose enough to cause the nasal bridge to collapse inward, creating a visible dip known as a saddle nose deformity. This happens because the septum’s cartilage is what holds the bridge of your nose in its shape.
How It’s Diagnosed
An ENT specialist diagnoses a septal perforation by looking inside your nose with an endoscope, a thin tube with a camera and light. The perforation itself is usually easy to see. What takes more investigation is figuring out why it happened. Your doctor will ask about nasal surgeries, medication use, recreational drug history, and symptoms of autoimmune conditions. In some cases, blood work or a biopsy of the tissue around the perforation is needed to rule out inflammatory diseases that require their own treatment.
Non-Surgical Options
Not every perforation needs surgery. If the hole is small and symptoms are mild, regular saline rinses and nasal moisturizers can keep the edges from crusting and reduce nosebleeds. Avoiding irritants, including the spray or substance that caused the perforation, is essential to prevent it from growing.
For people who want symptom relief without an operation, a septal button is an option. This is a small silicone prosthesis that snaps into the hole like a plug, covering both sides of the perforation. Commercially available buttons come in a standard 3-centimeter diameter, while larger perforations (2 centimeters or more) typically require a custom-made version. A study tracking long-term outcomes found that septal buttons improved the core nasal symptoms of stuffiness, crusting, and bleeding by about 70%. However, tolerance is a real issue. In that same study, 67% of patients eventually had their button removed, most commonly because of discomfort, ongoing crusting around the device, or difficulty keeping it clean. Only about 11% of patients considered the button their ideal long-term solution, with most preferring surgical repair if it were available to them.
Surgical Repair
Surgery aims to permanently close the hole using tissue flaps, grafts, or a combination of both. The basic principle is the same across techniques: healthy tissue is moved over the perforation to seal it and restore the blood supply that keeps the septum alive.
For smaller perforations, surgeons can often rearrange tissue from inside the nose itself, rotating or advancing nearby lining to cover the hole. Larger perforations require borrowed tissue. One established approach uses a piece of the tough connective tissue covering the temple muscle (temporalis fascia) as a graft to bridge the gap. A newer variation uses fascia harvested from the thigh instead, which provides a larger piece of tissue for bigger defects. In either case, the graft is typically stabilized with a thin absorbable plate that holds everything in place while healing occurs, then dissolves on its own.
Success rates depend heavily on the size of the perforation. Smaller holes close more reliably than larger ones, and perforations under 2 centimeters generally have the best surgical outcomes. Even with a skilled surgeon, very large perforations can be difficult to close completely, and some require more than one procedure.
What Affects the Outcome
Regardless of whether you manage a perforation with saline, a button, or surgery, two things consistently influence how well things go. First, the underlying cause needs to be addressed. If cocaine use continues, or if an autoimmune disease goes untreated, any repair is likely to fail and the hole will reopen or enlarge. Second, keeping the inside of the nose moist makes a measurable difference. Regular saline irrigation reduces crusting, protects healing tissue, and slows the progression of untreated perforations.
Perforations do not heal on their own. The tissue edges, once formed, don’t regenerate across the gap. A small, symptom-free perforation may never need treatment, but one that causes symptoms or is getting larger will typically require intervention to improve quality of life.