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Jonathan Hughes | Hemel Hempstead

What is Post-nasal Drip?

Post-nasal drip happens when excess mucus produced in the nose and sinuses drips down the back of the throat. This can cause a constant need to clear the throat, coughing, or a sensation of something “stuck” at the back of the throat. Although the nose naturally produces mucus to keep the airways moist and trap dust and germs, too much can become bothersome and may point to an underlying condition.

Causes of Post-nasal Drip

There are several possible reasons for post-nasal drip. Allergies such as hay fever, dust, or pet allergies can cause the lining of the nose to swell and produce more mucus. Viral infections like the common cold may trigger temporary symptoms, while chronic sinusitis or nasal polyps can cause more persistent mucus production. Environmental irritants such as smoke, strong smells, or pollution may also play a role. Acid reflux from the stomach can sometimes mimic or worsen post-nasal drip, leading to throat irritation and coughing.

Symptoms of Post-nasal Drip

The most common symptoms include frequent throat clearing, a sensation of mucus at the back of the throat, chronic cough, sore throat, or hoarseness. Some people also notice bad breath, nausea from swallowed mucus, or worsening symptoms at night when lying down.

Treatment Options

Treatment depends on what is causing the problem. Simple measures such as staying hydrated, using saline rinses, and avoiding irritants often help. If allergies are the cause, antihistamines or steroid nasal sprays can reduce inflammation. Chronic sinusitis or nasal polyps may require specialist treatment, which can include surgery if medication is not enough. If acid reflux is contributing, dietary changes, avoiding late meals, and sometimes medication to reduce stomach acid can improve symptoms. An ENT specialist can carry out a nasal endoscopy to check the nose and throat, and advise on tailored treatment.

If you’re struggling with Post-nasal Drip, get in touch with your ENT specialist in London to book a consultation today!
020 3897 0667

Why do I always feel mucus at the back of my throat?
This is usually due to post-nasal drip, where excess mucus from the nose or sinuses runs down into the throat rather than coming out through the front of the nose.

Can post-nasal drip cause a chronic cough?
Yes. Post-nasal drip is one of the most common causes of long-term cough, as mucus irritates the throat and triggers coughing.

Is post-nasal drip the same as catarrh?
They are very similar. Catarrh is a general term for mucus build-up in the nose and throat, while post-nasal drip specifically refers to mucus dripping down into the throat.

Can acid reflux cause post-nasal drip?
Yes. Acid reflux can irritate the throat and mimic or worsen the sensation of post-nasal drip. Treating the reflux often helps reduce symptoms.

When should I see a specialist?
If post-nasal drip is persistent, affects your sleep or quality of life, or is associated with other symptoms such as nosebleeds, facial pain, or unexplained weight loss, it is important to seek an ENT assessment.