Also known as: Posterior Rhinorrhea
Post-nasal drip is mucus draining from the back of the nose into the throat. It can cause throat clearing, cough, and the sensation of something stuck in the throat.
The nose and sinuses produce about 1-2 quarts of mucus daily, which normally drains unnoticed. Post-nasal drip becomes symptomatic when mucus production increases or thickens.
Allergies are the most common chronic cause, while viral infections cause acute post-nasal drip lasting 1-2 weeks. Laryngopharyngeal reflux (silent reflux) is an often-overlooked cause.
Post-nasal drip is one of the top three causes of chronic cough, along with asthma and GERD.
There are several possible reasons you may be experiencing Post-Nasal Drip. Here are the most common ones.
Allergic inflammation increases mucus production, causing chronic post-nasal drainage and throat clearing.
Infected sinuses produce thick, discolored mucus that drains into the throat.
Viral infections increase mucus production, with post-nasal drip often lasting after other symptoms resolve.
Acid reflux reaching the throat irritates nasal passages and increases mucus production.
These approaches may help manage post-nasal drip at home. Always consult a healthcare provider if symptoms persist or worsen.
Neti pot or saline rinse flushes mucus and allergens from nasal passages.
Adequate fluids thin mucus, making it easier to drain.
Propping up pillows helps mucus drain forward rather than into the throat.
Nasal endoscopy, allergy testing, CT scan for sinusitis, and pH monitoring for reflux-related post-nasal drip.
See a doctor if post-nasal drip lasts over 10 days, produces blood-tinged or foul-smelling mucus, or is accompanied by fever, facial pain, or persistent cough.
Steps you can take to reduce the likelihood of experiencing post-nasal drip.
Treat allergies proactively
Use saline rinses regularly during allergy season
Stay hydrated
Avoid known environmental irritants
From a cold: 1-2 weeks. Allergic: as long as allergen exposure continues. Persistent cases need evaluation.
Yes. Silent reflux irritates the throat and nasal passages, increasing mucus production without typical heartburn.
Mucus draining into the throat triggers the cough reflex, especially when lying down.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.