Post-nasal drip

Post-nasal drip is the sensation of mucus moving from the nose or sinuses down the back of the throat. It can cause throat clearing, a cough or a feeling of mucus that is difficult to swallow. Allergy, infection and irritation are possible contributors, and persistent symptoms may need assessment.

Is throat clearing always caused by mucus?

No. Reflux, voice strain and other throat conditions can create a similar sensation. A doctor asks about nasal symptoms, timing, triggers and how long the problem has continued. The phrase post-nasal drip describes a symptom pattern rather than proving its cause.

Notice whether symptoms occur with sneezing, itchy eyes, a cold or a blocked nose. Tell the clinician about changes in smell, facial discomfort, smoking or vaping and products used in the nose. Mention whether the cough is disturbing sleep or affecting your voice.

For the Australian guidance behind this explanation, see Healthdirect Australia: Post-nasal drip - Healthdirect Australia.

What can I do about recurring symptoms?

Reducing exposure to a known irritant may help. Gentle measures and suitable nasal care can be discussed with a pharmacist or doctor. Do not repeatedly use an old product without checking directions and whether it is appropriate for the current problem.

If symptoms persist, a clinician may examine the nose and throat or consider specialist review. Tests are chosen according to findings; not everyone needs a scan. Ask whether allergy, sinus disease or another cause is most likely and how to judge whether the management plan is working. Repeated throat clearing itself can add irritation.

When should I seek prompt care?

Blood in mucus, troublesome wheezing, difficulty breathing or unusual foul-smelling discharge needs medical advice. Severe breathing difficulty requires 000. Persistent one-sided symptoms or worsening illness should also be reviewed. Telehealth can help with history and follow-up, but direct nasal or throat examination may be needed to identify the cause.

Where to go next

Read Doccio information about hay fever to understand the relevant service. A doctor decides whether a consultation, examination, referral or another pathway is appropriate for your situation.