Post-Nasal Drip: Causes, Remedies & When to See a Doctor

What Is Post-Nasal Drip?

Post-nasal drip occurs when excess mucus from your nose and sinuses drips down the back of your throat. It can cause a persistent cough, sore throat, frequent throat clearing, and a feeling of something stuck in your throat. It is one of the most common causes of chronic cough.

Common Causes of Post-Nasal Drip

• Allergies
• Common cold or flu
• Sinusitis
• Weather changes or dry air
• Certain foods (spicy, dairy)
• Acid reflux (LPR)

When to See a Doctor

See a doctor if post-nasal drip lasts more than 10 days, produces foul-smelling or discolored mucus, is accompanied by fever, or causes persistent cough or ear problems.

Warning Signs That Need Immediate Attention

Frequently Asked Questions

What causes post-nasal drip?

Allergies are the most common cause, followed by colds, sinus infections, dry air, and acid reflux. Your body normally produces 1-2 quarts of mucus daily. Post-nasal drip happens when this mucus becomes thicker or more noticeable.

How do I stop post-nasal drip?

Saline nasal irrigation, staying hydrated, using a humidifier, and treating the underlying cause (allergies, reflux) are most effective. Antihistamines help for allergies. Avoid dairy if it thickens your mucus.

Can post-nasal drip cause a sore throat?

Yes, the constant dripping of mucus irritates the throat, causing soreness, coughing, and frequent throat clearing. Treating the post-nasal drip usually resolves the sore throat.

Is post-nasal drip caused by acid reflux?

Yes, laryngopharyngeal reflux (LPR) can cause post-nasal drip sensation, chronic cough, and throat clearing. You may not have typical heartburn symptoms. An ENT or GI specialist can evaluate this.

How much does ENT treatment cost?

An ENT visit costs $150-$400. Allergy testing costs $200-$800. A CT scan of sinuses costs $300-$1,000. OpenMyPro helps you find affordable ENT care near you.

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