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Nasal Allergies

Postnasal Drip

The feeling of mucus dripping down the back of your throat — often causing chronic cough, throat clearing, and hoarseness. Usually a symptom of allergies, sinusitis, or non-allergic rhinitis.

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Dr. Payel Gupta, MD

Medically Reviewed

Dr. Payel Gupta, MD

Triple Board-Certified Allergist & Immunologist

Last reviewed: May 2026

Overview

Postnasal drip is the sensation of mucus draining from the nose into the back of the throat. It is often related to allergic rhinitis, sinusitis, or other nasal conditions.

symptoms

  • Feeling of mucus in the throat
  • Frequent throat clearing or coughing
  • Nasal congestion or runny nose
  • Bad breath or sore throat in some

triggers

  • Allergic rhinitis
  • Sinusitis
  • Cold or infection
  • Environmental irritants

testing

  • Allergy testing if allergy suspected
  • Nasal or sinus evaluation when needed

treatment

avoidance

  • Identify and avoid allergens
  • Stay hydrated

medications

  • Nasal saline irrigation
  • Nasal corticosteroids
  • Antihistamines
  • Decongestants short-term if appropriate

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