What Is a Nasal Endoscopy?

You have probably been offered this test with very little explanation: the doctor wants to "have a look inside the nose" with a camera. That one sentence hides a lot of questions, so let's work through them in the order most people ask them.

The video at the top of this page, "Anatomy Tutorial During Trans Nasal Endoscopy", runs about two minutes and twenty seconds and does exactly what its title promises — it walks through the anatomy you can see as the thin scope travels through the nose. Keep it in mind as you read: almost everything below is about structures that tutorial names.

What exactly is being put up my nose?

A nasal endoscope is a slender tube — rigid or flexible depending on the clinic — with a bright light and a camera lens at its tip. The images appear on a screen, so the examiner isn't peering through an eyepiece and guessing; they're watching a magnified, well-lit view of your nasal passages in real time. Because the scope is so thin, it can pass along the natural corridors of the nose and look into places a torch and a speculum simply can't reach, including the openings where your sinuses drain.

Why would my doctor want one?

Usually because symptoms alone don't tell the whole story. Persistent congestion, repeated sinus infections, loss of smell, one-sided blockage, nosebleeds that keep coming back, or a suspected polyp — all of these can look similar from the outside and very different from the inside. An endoscopy lets the clinician see swelling, discharge coming from a sinus opening, polyps, or a deviated septum directly, rather than inferring them. It's also how doctors check healing after sinus surgery and how they plan that surgery in the first place.

If surgery does enter the conversation, our guide to sinus surgery explains what those operations involve, while readers dealing with a bent septum may want our septoplasty guide alongside it.

What does it actually feel like?

Honestly? Odd more than painful, for most people. Before the scope goes in, the nose is usually sprayed with a decongestant and a local anaesthetic, and you'll be asked to give that spray a few minutes to work. The scope then slides in slowly while you sit upright and breathe normally. People tend to describe pressure, an urge to sneeze, or watery eyes rather than sharp pain — and you can speak throughout, so you're never stuck silently enduring it. The whole examination typically takes only a few minutes.

Want to see the geography first? The explainer "Anatomy of The Nasal Cavity and Sinuses" shows the chambers and openings the scope passes, which makes the real procedure feel far less mysterious.

Do I need to prepare, and can I drive home?

There's normally nothing special to do beforehand — no fasting, no sedation, and no recovery room. You can usually drive yourself home afterwards, though your nose may feel numb or your taste slightly odd until the spray wears off. Your clinician may advise avoiding blowing your nose hard for a short while, and a spot of blood-tinged mucus afterwards isn't unusual. If a biopsy or a small procedure is planned at the same appointment, you'll be told in advance, because that changes the preparation.

What happens with the findings?

Often, the answer is immediate: the clinician has seen what they needed and can talk you through it on the spot — inflamed lining, a polyp, discharge from a particular sinus — and agree the next step with you there and then. Sometimes the endoscopy is one piece of a bigger picture and a scan is arranged as well. And sometimes the finding points towards the shape of the nose itself, in which case our guide to rhinoplasty covers the operation that reshapes it, and how it differs from purely functional surgery.

No condition hub and no relevant calculator exist on this site for nasal endoscopy, so neither is linked.

References & further reading

• Cleveland Clinic — Nasal Endoscopy: Procedure Details & Results: https://my.clevelandclinic.org/health/diagnostics/22156-nasal-endoscopy
• MedlinePlus — Sinus Infection (Sinusitis): https://medlineplus.gov/sinusitis.html
• NHS — Sinusitis (sinus infection): https://www.nhs.uk/conditions/sinusitis-sinus-infection/

Frequently Asked Questions

Is a nasal endoscopy the same as a sinus scan?

No. A scan takes pictures from outside the body, while an endoscopy is a direct look with a camera inside the nose. The two are often used together, because each shows things the other can miss.

Will I need time off work afterwards?

Usually not. With no sedation involved, most people go straight back to their day once the numbing spray wears off, unless a biopsy or procedure was also performed.

Can children have a nasal endoscopy?

Yes — thinner scopes are used, and the approach is adapted to the child. The decision, and how it's handled on the day, rests with the treating specialist.

What if nothing abnormal is found?

That's still a useful result. A normal endoscopy rules out several structural causes at once and helps your clinician decide whether symptoms are more likely driven by allergy, inflammation, or something outside the nose altogether.

MedicalVideos.com has published trusted medical videos since 2007. The site was founded by Dr. Mohamed Ibrahim, MD, PhD — physician-scientist.

Educational only — this article is general information about nasal endoscopy, not medical advice and not a diagnosis. Whether you need this examination, and what its findings mean for you, belongs to your own clinician.