A cough is a natural reflex that helps clear the airways of mucus, irritants, or foreign material.
However, when a cough persists for more than eight weeks, it is considered chronic cough.
Chronic coughing can interfere with sleep, work, and daily activities, and may lead to throat
irritation, hoarseness, or fatigue. Identifying the underlying cause is important to provide
effective treatment.
Common Causes of Chronic Cough
Several conditions frequently contribute to long-lasting cough.
Postnasal Drip (Upper Airway Cough Syndrome)
Mucus draining from the nose and sinuses into the throat can trigger coughing. This may occur
due to:
● Allergies
● Chronic sinusitis
● Nasal congestion or inflammation
Postnasal drip often causes a sensation of mucus in the throat and frequent throat clearing.
Acid Reflux (Laryngopharyngeal Reflux)
Stomach acid can travel up the esophagus and irritate the throat and voice box. This condition
is called laryngopharyngeal reflux (LPR).
Symptoms may include:
● Chronic cough
● Hoarseness
● Frequent throat clearing
● A sensation of a lump in the throat
Many people with LPR do not experience typical heartburn.
Asthma
Asthma can cause coughing due to airway inflammation and sensitivity. Some patients have
cough-variant asthma, where cough is the primary symptom rather than wheezing.
Respiratory Infections
A cough may persist for several weeks after a viral infection, sometimes referred to as
post-viral cough.
Medications
Certain medications, particularly ACE inhibitors used for blood pressure, may cause a
persistent dry cough in some individuals.
Symptoms Associated With Chronic Cough
People with chronic cough may experience:
● Frequent or persistent coughing
● Throat irritation
● Hoarseness or voice changes
● A sensation of mucus in the throat
● Chest discomfort from repeated coughing
● Sleep disruption
How Chronic Cough Is Evaluated
Evaluation typically includes a detailed history and examination of the nose, throat, and
airway.
Additional testing may be recommended depending on symptoms, including:
● Imaging of the chest or sinuses
● Pulmonary function testing
● Evaluation for reflux or allergies
Identifying the underlying cause is key to successful treatment.
Treatment Options
Treatment depends on the cause of the cough. Possible approaches include:
● Treating postnasal drip with nasal medications or allergy treatment
● Managing acid reflux with dietary changes or medications
● Asthma treatments to reduce airway inflammation
● Adjusting medications that may trigger coughing
In many cases, chronic cough improves once the underlying condition is addressed.
When to Seek Evaluation
You should consider evaluation if a cough:
● Persists for more than eight weeks
● Occurs with hoarseness or throat irritation
● Disrupts sleep
● Is associated with shortness of breath or chest pain
● Produces blood or significant mucus
Schedule a Consultation
If you are experiencing a persistent cough, a consultation can help determine the underlying
cause and develop a treatment plan to improve breathing and overall comfort.