Causes of Septal Perforation
A septal perforation can develop for several different reasons. Previous nasal surgery and local tissue injury are recognised causes, but medication or drug exposure, inflammatory disease, infection and other conditions may also be relevant in selected patients.
Identifying the likely cause can be important because treatment should address more than the opening itself where an underlying process is still active.
Different causes can ultimately affect the mucosal lining, blood supply and supporting septal tissue.
A Perforation Is a Finding — Not the Diagnosis of Its Cause
Seeing an opening in the septum tells the clinician what has happened anatomically. It does not, by itself, explain why the tissue was damaged.
The clinical history is therefore important. Previous operations, nasal injuries, medication, intranasal exposure and wider health problems may provide clues.
In many patients the likely cause is clear from that history. In others, further investigation may be considered before treatment is planned.
The Main Groups of Septal Perforation Causes
Causes can overlap. A clinician may need to consider several possible contributors rather than assigning every perforation to a single category immediately.
Previous Nasal Surgery & Procedures
Septoplasty, nasal surgery, cautery and other procedures can occasionally contribute to perforation.
Learn more ↓ 02 TraumaPhysical Injury
Significant nasal trauma or repeated local injury can damage the septal lining and supporting tissue.
Learn more ↓ 03 ExposureIntranasal Drugs & Irritants
Cocaine and some other repeated local exposures can damage nasal tissue and blood supply.
Learn more ↓ 04 MedicationLocal Medication-Related Injury
Overuse or repeated septal-directed exposure to certain nasal medicines may contribute in uncommon circumstances.
Learn more ↓ 05 Systemic DiseaseInflammatory & Autoimmune Disease
Certain inflammatory conditions can damage nasal tissue, although these are not the cause of every unexplained perforation.
Learn more ↓ 06 InfectionInfectious Causes
Certain infections can cause destructive nasal disease, but these causes are relatively uncommon.
Learn more ↓ 07 OtherNeoplasia & Occupational Exposure
Tumours and particular occupational exposures belong in the differential diagnosis in selected circumstances.
Learn more ↓ 08 IdiopathicNo Definite Cause Identified
Sometimes no single cause can be established even after appropriate clinical assessment.
Learn more ↓Previous Nasal Surgery or Medical Procedures
Damage to both sides of the septal lining can affect the blood supply and viability of the cartilage between them.
A perforation is a recognised potential complication of operations involving the nasal septum. It can occur after procedures such as septoplasty and may also occur in the context of other nasal surgery.
Other medical interventions involving the septum, such as cauterisation for recurrent nosebleeds, can also contribute in some circumstances.
Procedures That May Be Relevant
- Septoplasty
- Previous septal surgery
- Rhinoplasty involving septal tissue
- Nasal cauterisation
- Repeated nasal instrumentation
- Selected prolonged pressure injuries from nasal devices
Trauma Can Damage the Septal Lining
A significant injury to the nose can damage the septal mucosa, cartilage or blood supply.
Possible examples include direct nasal impact, fractures and repeated local trauma. Repeated manipulation of damaged or crusted septal tissue can also make an already vulnerable area more difficult to heal.
Significant impact may injure cartilage and mucosal tissue.
Complications following trauma can compromise septal tissue if not treated appropriately.
Persistent manipulation can maintain irritation and interfere with healing.
Cocaine & Other Tissue-Damaging Exposures
Intranasal cocaine is a recognised cause of septal perforation. Repeated exposure can interfere with local blood supply and damage the nasal lining and supporting cartilage.
Tissue injury can extend beyond a small isolated perforation in severe cases, which is why an honest exposure history is clinically important.
The purpose of asking about substance exposure is to understand tissue health and make safer treatment decisions, not to judge the patient.
Read about cocaine-related nasal damage →Ongoing Exposure Can Change Treatment Planning
Do Not Stop Prescribed Nasal Medication Because of This Page
Correctly used nasal medicines are prescribed for many common ENT conditions. If you are concerned about how you use a spray, discuss it with your clinician or pharmacist.
Nasal Sprays Need Appropriate Technique
Repeated local exposure to certain medications can contribute to mucosal injury in uncommon circumstances.
Excessive use of vasoconstrictor decongestant sprays can damage nasal mucosa. When a steroid nasal spray is prescribed, directing the nozzle away from the septum rather than repeatedly spraying the central septal lining can help reduce local irritation.
A history of nasal spray use does not automatically mean the spray caused a perforation.
Some Systemic Diseases Can Involve the Nose
Certain inflammatory diseases can damage nasal tissue and are recognised causes of septal perforation.
Granulomatosis with polyangiitis is one of the better-recognised autoimmune associations. Other systemic inflammatory conditions have also been reported.
These conditions are important to consider when the clinical history or examination raises suspicion, but they should not be assumed simply because a perforation is present.
A systemic inflammatory vasculitic condition that can involve the upper respiratory tract.
A rare inflammatory disorder affecting cartilage and other tissues.
Additional autoimmune or inflammatory conditions may be considered where the wider clinical picture suggests them.
A Septal Perforation Alone Does Not Diagnose an Autoimmune Disease
Further investigation is more likely to be considered where the cause is unclear or where other symptoms or examination findings point towards a systemic process.
A Known Local Explanation
If a perforation appeared after previous septal surgery and the clinical picture is otherwise straightforward, extensive systemic investigation may not always be necessary.
Further Investigation May Be Appropriate
If there is no clear cause, blood tests, imaging or other investigations may be considered based on the patient’s history and examination.
Look Beyond the Nose When Relevant
Symptoms involving other organs or evidence of systemic inflammation can change the diagnostic approach.
Certain Infections Can Damage Septal Tissue
Infectious causes of septal perforation are much less common than routine postoperative or traumatic explanations, but they remain part of the differential diagnosis.
Conditions described in association with septal destruction include tuberculosis, syphilis and invasive fungal disease in appropriate clinical circumstances.
Testing is guided by risk factors, clinical findings and the wider medical history rather than performed automatically for every patient.
Syphilis Is an Infection — Not a Malignancy
Infectious disease and cancer are separate diagnostic categories and should not be grouped together when explaining septal perforation.
Neoplasia & Occupational Exposure
These are important considerations in selected patients but should not be presented as likely explanations for every septal perforation.
Neoplasia
Rare tumours involving the nasal septum can produce tissue destruction. Suspicious lesions, unusual tissue changes or an unclear diagnosis may require biopsy.
Occupational Exposure
Historical and occupational exposure to certain industrial chemicals or dusts has been associated with destructive nasal disease in particular working environments.
Radiation or Significant Tissue Injury
Previous treatment or injury capable of damaging nasal tissue and blood supply can sometimes be relevant to the clinical history.
Sometimes No Definite Cause Is Found
In some patients, the clinical assessment does not identify a single convincing explanation.
The term idiopathic may be used when no definite cause has been established after appropriate consideration of the history, examination and any investigations that were clinically indicated.
It does not necessarily mean that the perforation is more serious; it simply describes uncertainty about its origin.
Questions That Help Clarify the Cause
A detailed history can often narrow the possible causes before any laboratory or imaging investigation is considered.
Have You Had Previous Nasal Surgery?
The type of operation and when symptoms started can provide important context.
Has the Nose Been Injured?
Previous fractures, significant impacts or local trauma may be relevant.
Have You Used Intranasal Drugs or Irritants?
Accurate information helps assess tissue health and treatment safety.
Which Nasal Medicines Have You Used?
Type, technique and frequency may provide useful clinical information.
Are There Symptoms Outside the Nose?
Relevant systemic symptoms may influence whether further investigation is considered.
When Was the Perforation First Noticed?
The timing relative to surgery, trauma or symptoms can help establish the likely sequence of events.
Does Every Patient Need Blood Tests or a Biopsy?
No. Investigation should be proportionate to the clinical situation.
Where the cause is apparent from the history, such as a straightforward postoperative perforation, extensive investigation may not be required.
Where the cause remains unexplained, additional investigations may be appropriate.
Previous surgery, trauma, medication, exposure and wider medical history.
Size, position, crusting, inflammation and surrounding tissue are assessed.
Nasal endoscopy may help assess the septum and wider nasal cavity.
Blood tests, imaging or biopsy may be considered when clinically indicated.
What a Septal Perforation Does Not Automatically Mean
You Have an Autoimmune Disease
Autoimmune causes exist, but the clinical context determines whether they need investigating.
You Have Cancer
Neoplasia is part of the differential diagnosis, not an explanation to assume from the presence of a perforation alone.
Your Nasal Spray Caused It
Medication use has to be considered alongside technique, dose, duration and other possible causes.
Surgery Is Required
Identifying the cause is one part of assessment. Treatment depends on symptoms and individual clinical findings.
The Septal Perforation Information Pathway
Background
Understand septal anatomy and why the opening changes nasal airflow.
Read background →Causes
Understand surgical, traumatic, exposure-related and medical causes.
Current pageSymptoms
Learn about crusting, bleeding, whistling, irritation and obstruction.
Explore symptoms → 04 Possible EffectsComplications
Understand potential progression and structural problems in selected cases.
Explore complications → 05 AssessmentDiagnosis
History, examination, endoscopy and targeted investigation.
Understand diagnosis →
Understanding the Cause Before Planning Treatment
Mr Hassan Elhassan — Consultant ENT Surgeon
Septal perforation treatment planning involves more than measuring the opening. Previous surgery, exposure history, surrounding tissue, inflammation, structural support and the likely underlying cause can all influence the clinical approach.
This page describes recognised causes in general terms. It cannot determine why an individual patient has developed a septal perforation. Diagnosis and investigation should be based on the patient’s history, examination and clinical circumstances.
Next: Symptoms of Septal Perforation
Learn why septal perforations can cause crusting, nosebleeds, whistling, dryness and the surprising sensation of nasal blockage.