Chronic Cough From ENT Causes?

Upper airway causes are among the most common

A chronic cough is a cough that lasts more than eight weeks in adults. Research on chronic cough has consistently found that a few causes account for most cases: upper airway cough syndrome (largely postnasal drip), asthma, and reflux. Two of these three involve the ear, nose, and throat area.

ENT causes of chronic cough

Postnasal drip (upper airway cough syndrome)

Mucus draining from the nose and sinuses irritates cough receptors in the throat. It is linked to allergic rhinitis, non-allergic rhinitis, and chronic sinusitis. The cough is often worse at night or in the morning, with frequent throat clearing.

Laryngopharyngeal reflux

Stomach contents reaching the larynx can trigger cough, hoarseness, and a lump sensation, often without heartburn. Coughing after meals, when lying down, or on waking is typical.

Laryngeal sensitivity

After a viral infection, the nerves of the larynx can remain oversensitive for weeks, so talking, laughing, cold air, or perfume triggers coughing fits.

Ear causes

A small branch of the vagus nerve supplies the ear canal. In some people, impacted earwax or a foreign object in the ear canal can trigger a cough reflex.

Non-ENT causes that need consideration

Asthma, including cough-variant asthma
ACE inhibitor blood pressure medicines
Smoking and vaping
Lung infections, including tuberculosis
Chronic lung disease or, rarely, lung cancer
Heart failure

A chest X-ray is usually part of the evaluation of a cough lasting this long.

What we do at Gangnam Yonsei ENT

Dr. Kim Yoo Suk, a former Yonsei and Ajou university professor and member of the Korean Academy of Asthma, Allergy and Clinical Immunology, evaluates the upper airway systematically. A nasal endoscopy checks for sinus drainage, polyps, and rhinitis, while a laryngoscopy looks for signs of reflux irritation or vocal cord problems. The ears are examined for wax or other triggers. An allergy test may be added if allergic rhinitis is suspected.

Treatment targets what is found: steroid sprays and saline irrigation for nasal causes, reflux measures and medication for LPR, and earwax removal when relevant. When findings suggest asthma or a chest cause, coordination with a lung specialist or internal medicine is recommended.

When to see a doctor promptly

Seek prompt medical care if your cough comes with coughing up blood, unexplained weight loss, night sweats, persistent fever, shortness of breath, chest pain, or a hoarse voice lasting more than four weeks, particularly if you smoke.

Keep a cough diary

Note when your cough is worse (night, after meals, outdoors, at work), any triggers, and medicines you take, including blood pressure pills. This information speeds up diagnosis.

English consultations are available near Gangnam-gu Office Station; see our English-speaking ENT page. Related: why postnasal drip won't stop and how long silent reflux takes to heal.

How long does a cough last after a cold?

A post-viral cough commonly lasts three to eight weeks as the airways recover from inflammation. A cough lasting more than eight weeks is considered chronic and deserves evaluation to find an underlying cause.

Can earwax really make you cough?

Yes, in some people. A nerve branch in the ear canal connects to the cough reflex, so impacted wax or an object in the ear can trigger coughing. It is an uncommon cause, but easy to check and treat.

Will cough syrup fix a chronic cough?

Cough syrup may ease symptoms briefly but does not treat the cause. Chronic cough improves when the underlying problem, such as postnasal drip, reflux, or asthma, is identified and treated.

Gangnam Yonsei ENT Clinic

Can an Ear, Nose or Throat Problem Cause a Chronic Cough? An ENT in Gangnam, Seoul Explains