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Understanding and Managing Postnasal Drip

04/21/2025

Most people experience postnasal drip at some point. Springtime and fall, when seasonal allergies are prevalent, are prime times. Winter can also increase instances of postnasal drip because drier outdoor and indoor air can dehydrate nasal passages.

What Is Postnasal Drip?

Postnasal drip occurs when mucus accumulates or drains from the sinuses into the throat. Mucus moistens the linings of your nose, throat, airways, and intestines and helps prevent bacteria from causing infections. Often, mucus passes down the throat, and you swallow it easily. However, allergies, sinusitis, colds, foods, or a deviated septum can cause you to produce more or thicker mucus that becomes postnasal drip. It can last for only a few days or be a chronic issue.

What Are the Symptoms of Postnasal Drip?

The most common symptoms of postnasal drip are:

• Frequent throat clearing.
• Coughing.
• Sore or itchy throat.
• Difficulty swallowing. Swallowing difficulties become more prevalent with age.
• Hoarseness.
• Ear infections, if mucus plugs the Eustachian tube.

While nausea isn’t common, you can experience nausea or vomiting if too much mucus occurs in the stomach.

How Is Postnasal Drip Diagnosed and Treated?

Health professionals diagnose postnasal drip through a comprehensive ear, nose, and throat examination, which may include laboratory tests, endoscopy and X-rays. They will also review your complete health history as part of the evaluation.

Treatment varies depending on the underlying cause:

• If caused by sinusitis or viral infections:
  Treatment typically involves antihistamines, steroid nasal sprays, and decongestants. It’s important to choose decongestants carefully, as some older over-the-counter options can thicken mucus. Newer, nonsedating antihistamines—some available by prescription—are often more effective. In severe cases, immunotherapy through injections or oral drops may be recommended.
• If caused by bacterial infection:
  Your ENT specialist may prescribe antibiotics. For chronic or persistent cases, surgery might be necessary.
• When the cause is unclear:
  General supportive measures can help. These include drinking plenty of fluids to thin mucus, using a humidifier to keep the air moist, and performing nasal irrigations several times a day to clear thickened secretions. Mucus-thinning medications may also provide relief. Additionally, elevating your head while lying down can prevent mucus from pooling in the throat.

How Can You Prevent Postnasal Drip?

Because so many factors contribute to postnasal drip, prevention is difficult. However, you can take some actions to lower your risk.

• Wash your hands. Washing prevents germs. Wash your hands before preparing or eating food, caring for an ill person, or treating a cut or wound. Also, wash them after blowing your nose, using the bathroom, changing diapers, or dealing with animal waste.
• Stay current on vaccinations for ailments such as the flu and COVID-19.
• Prevent allergies. Before the fall or spring seasons, you can take over-the-counter allergy medications. You can also control indoor allergens by washing your bed linens, vacuuming regularly, and using HEPA air filters.

The best way to develop a plan to prevent and treat postnasal drip is to visit a medical professional.