Some symptoms should not wait for a routine clinic appointment
Seek Urgent Medical Care If
- A nosebleed is heavy, persistent, running into the throat or accompanied by weakness, faintness or breathing difficulty.
- Swelling around the eye, reduced vision, double vision or severe eye pain develops with nasal or facial symptoms.
- Facial swelling, severe worsening pain, high fever, confusion or marked illness develops.
- Clear watery fluid begins draining from the nose after a significant head injury.
- A child may have placed a button battery or another hazardous object inside the nose.
- There is noisy breathing, choking, rapidly increasing throat or facial swelling, or difficulty getting enough air.
Diagnostic nasal endoscopy can be useful during assessment, but arranging a routine endoscopy should never delay emergency care.
What Is Diagnostic Nasal Endoscopy?
An endoscope is a narrow viewing instrument with a bright light. It may be flexible or rigid. The ENT specialist guides it gently through the nostril to inspect areas that cannot be seen clearly during a simple front-of-the-nose examination.
The image may be displayed on a screen and selected pictures may be recorded as part of the medical record.
A diagnostic examination is not sinus surgery
The routine test is performed to look and document findings. Tissue sampling, cautery, removal of an object or a therapeutic procedure is a separate step and should be explained before it is performed.
Why Might It Be Recommended?
Persistent nasal blockage
Especially when one side is consistently worse or an ordinary examination does not explain the obstruction.
Repeated nosebleeds
To look for a bleeding point or another cause deeper inside the nose.
Discharge or postnasal drip
To assess mucus, crusting, inflammation or drainage from the sinus openings.
Reduced or altered smell
To look for swelling, polyps or another obstruction affecting airflow.
Facial pressure or suspected sinus disease
To correlate symptoms with the appearance of the nasal cavity and sinus drainage pathways.
Follow-up after nasal treatment or surgery
To assess healing, crusting, scar formation or recurrence of a previously treated problem.
The test may also be used to examine a suspected polyp, mass, foreign body, septal problem or the back of the nose. Having the test does not mean that cancer is suspected.
What Can the Camera Show?
What Can It Not Show?
- It cannot see through bone or display every hidden part of every sinus.
- It cannot determine the exact nature of every lump from appearance alone.
- It does not replace CT or MRI when deeper anatomy or the extent of disease must be mapped.
- A normal examination does not explain every cause of headache, facial pain, smell disturbance or nasal symptoms.
- It does not assess the lungs, food pipe or stomach.
Findings are interpreted alongside the history, ordinary ENT examination and any appropriate imaging or laboratory results.
How Should I Prepare?
- Routine diagnostic nasal endoscopy usually does not require fasting or sedation.
- Bring details of previous nasal surgery, injury, scans and relevant reports.
- Tell the clinician about repeated heavy nosebleeds, bleeding disorders, allergies, pregnancy and any previous reaction to a nasal spray.
- Provide an accurate list of regular treatment, including anything that affects bleeding.
- Do not stop prescribed treatment unless the clinician responsible for it gives an individual plan.
- Tell the team if you tend to faint during medical examinations or become very anxious about nasal procedures.
Instructions may differ if another procedure, tissue sampling or sedation is planned at the same visit.
What Happens During the Examination?
1. Symptoms are reviewed
The clinician confirms the reason for the examination and any relevant bleeding or allergy information.
2. The front of the nose is checked
An ordinary light examination helps identify the safer and more comfortable route.
3. A spray may be offered
A local spray may reduce swelling or numb the lining. It is not necessary in every patient.
4. The slim camera is passed gently
You remain awake and can breathe normally while the clinician examines one or both sides.
5. Images may be recorded
Photographs or video can document the findings and support follow-up comparison.
6. The findings are discussed
The next step may be reassurance, follow-up, imaging or a separately planned procedure.
You can ask the clinician to pause at any point. A routine diagnostic examination normally ends as soon as the necessary areas have been viewed.
What Might I Feel?
Most patients describe pressure, tickling, watering of the eyes or the urge to sneeze rather than sharp pain. A narrow or inflamed side may feel more uncomfortable.
If a flexible scope reaches the back of the nose, you may briefly feel it in the throat or feel like swallowing. It should not block normal breathing. Tell the clinician immediately if discomfort becomes more than you can tolerate.
Are There Risks?
- Temporary discomfort, watering, sneezing or throat awareness.
- A small nosebleed, particularly when the lining is inflamed or fragile.
- Brief light-headedness or faintness in a susceptible patient.
- Temporary numbness or an unpleasant taste if a local spray is used.
- A reaction to a spray, although this is uncommon.
Serious complications from a routine diagnostic examination are uncommon. The risk profile changes if tissue is sampled or treatment is performed.
What Happens Afterwards?
Most people leave the clinic immediately and return to their usual activities. If a numbing spray was used, follow the clinic’s instructions about when it is safe to eat or drink, because throat sensation may remain reduced briefly.
Minor irritation or a small spot of blood can occur. Contact the hospital if bleeding is more than minor, does not settle, or is accompanied by faintness, breathing difficulty or marked illness.
What May the Result Lead To?
Reassurance or observation
No concerning abnormality is seen and the clinical picture supports follow-up without another immediate test.
Further assessment
Imaging, allergy evaluation, hearing assessment or another targeted investigation may be appropriate.
A separately planned procedure
Selected findings may need suction, cautery, removal, tissue sampling or surgery after explanation and consent.
Higher-centre referral
A complex mass, skull-base concern, major trauma or disease extending beyond local capability may require specialist referral.
A Camera Finding Must Match the Patient’s Symptoms
Mild swelling or a bent septum can be present without causing the main complaint. Equally, a normal-looking nasal cavity does not explain every headache, smell problem or facial symptom. The examination is one part of the clinical assessment.
Common Myths
Frequently Asked Questions
Is nasal endoscopy painful?
It may feel unusual or uncomfortable, but most patients describe pressure or tickling rather than sharp pain. Tell the clinician if you need the examination paused.
How long does it take?
The camera examination itself usually takes only a few minutes. Discussion, preparation and reviewing findings make the full appointment longer.
Will I be awake?
Yes. Routine diagnostic nasal endoscopy is normally performed while you are awake and communicating with the clinician.
Do I need to fast?
Fasting is not usually required for a routine diagnostic examination without sedation. Follow any different instructions given for your particular appointment.
Can I breathe during the test?
Yes. The scope is slim and does not seal the airway. You may breathe through the opposite nostril or mouth.
Why is an ordinary nasal examination not enough?
A front examination cannot show every deeper recess, drainage pathway or the back of the nose. The camera provides a magnified view of these areas.
Is the scope rigid or flexible?
Either may be used. The choice depends on the area that needs examination, nasal anatomy, symptoms and patient comfort.
Does the test expose me to radiation?
No. It uses a light and camera rather than X-rays.
Can it diagnose sinusitis?
It can show inflammation, discharge, polyps and drainage pathways, but the diagnosis also depends on symptoms and may require imaging in selected cases.
Can it detect a nasal polyp or mass?
It may show a visible polyp or mass. Appearance alone may not establish the exact tissue type, so imaging or planned tissue sampling can still be needed.
Will a biopsy be taken without telling me?
No planned tissue sample should be taken without an explanation of why it is needed, the relevant risks and your consent.
Can children have nasal endoscopy?
Yes, when clinically appropriate. The approach depends on the child’s age, cooperation, symptoms and urgency. A parent or caregiver can discuss how the examination will be made as comfortable as possible.
Can it be performed during pregnancy?
The camera itself does not use radiation. Pregnancy and any planned spray or additional procedure should still be discussed with the clinician.
What if the result is normal but my symptoms continue?
The clinician may reconsider non-nasal causes, arrange follow-up or select another investigation according to the symptom pattern.
When is higher-centre referral appropriate?
Referral may be needed for a complex mass, suspected skull-base problem, major facial trauma, uncontrolled bleeding or disease requiring specialist imaging or surgery beyond local capability.