Do you constantly feel mucus stuck in your throat, keep clearing your throat, or feel something dripping from your nose into your throat?

You may be experiencing post-nasal drip.

Post-nasal drip occurs when mucus from the nose or sinuses drains down the back of the throat. It is not a disease by itself—it is usually a symptom of an underlying nasal or sinus problem.

What Causes Post-Nasal Drip?

Several conditions can cause excessive mucus production or changes in mucus drainage, including:

• Allergic rhinitis – pollen, dust mites, mould and other allergens can trigger nasal inflammation.

• Non-allergic rhinitis – smoke, strong smells, weather changes and other irritants may trigger symptoms.

• Common cold or viral infections

• Sinusitis

• Deviated nasal septum or nasal polyps

• Acid reflux, which can sometimes cause throat irritation and frequent throat clearing.

What Does Post-Nasal Drip Feel Like?

Common symptoms include:

Mucus or a “lump” in the throat • Frequent throat clearing • Cough • Hoarseness • Sore throat • Nasal congestion • Feeling of mucus dripping at the back of the throat

Night-time symptoms can sometimes disturb sleep.

Is Post-Nasal Drip Caused by Allergy?

It can be. Allergic rhinitis can cause nasal inflammation and increased mucus production, resulting in drainage into the throat.

If symptoms repeatedly occur around dust, pollen, pets or other triggers, an allergy evaluation may help identify the underlying cause.

How Can You Reduce Post-Nasal Drip?

Treatment depends on the cause. Depending on the diagnosis, your doctor may recommend:

• Avoiding identified allergens and irritants

• Saline nasal rinses

• Appropriate treatment for allergic rhinitis

• Treatment of sinus infection when present

• Managing reflux when it contributes to symptoms

• Evaluation for structural nasal problems when necessary

Avoid repeatedly clearing your throat forcefully, as this can further irritate the throat.

Frequently Asked Questions

Is post-nasal drip serious?

Usually, post-nasal drip is not serious. However, persistent or recurrent symptoms should be evaluated to identify the underlying cause.

Can allergies cause mucus in the throat?

Yes. Allergic rhinitis can increase nasal inflammation and mucus production, causing mucus to drain into the throat.

How do I know if my throat mucus is from allergy?

Symptoms such as repeated sneezing, itchy nose, watery eyes and nasal congestion occurring around specific triggers may suggest allergy. An allergy specialist can assess the symptoms and recommend appropriate testing when required.

Can post-nasal drip cause coughing?

Yes. Mucus draining into the throat can irritate the upper airway and contribute to coughing and frequent throat clearing.

When should I see a doctor for post-nasal drip?

See a doctor if symptoms persist, repeatedly return, interfere with sleep, or are associated with breathing difficulty, significant facial pain, fever, recurrent sinus problems or other concerning symptoms.

That constant mucus sensation in your throat may actually be coming from your nose.

Finding and treating the underlying cause—whether it is allergy, rhinitis, sinus problems, infection or another condition—is more effective than simply treating the throat symptoms.

Visit Allergy Central, Indiranagar, Bengaluru — your one-stop destination for allergy and asthma solutions.