When people have a persistent cough, they often think the problem must be coming from the lungs. But acid reflux can also cause or contribute to chronic cough.
Reflux occurs when stomach contents move back up into the esophagus. In some people, reflux can trigger coughing through irritation of the throat and esophagus or through reflux-related reflexes. Gastroesophageal reflux disease (GERD) is recognized as one of the possible causes of chronic cough.
Importantly, not every cough is caused by reflux, and several conditions can exist together.
How Can Reflux Cause Cough?
Reflux does not always mean that acid reaches the mouth.
When stomach contents move upward, they can irritate the esophagus and upper airway. Reflux can also trigger a reflex between the esophagus and airways that causes coughing.
This means a person may have a reflux-related cough even when there is no obvious acid taste or heartburn.
Can Reflux Cause Cough Without Heartburn?
Yes.
This is one reason reflux-related cough can be difficult to recognize.
Some people with reflux-associated cough do not experience the typical symptoms of heartburn or regurgitation. However, the absence of heartburn does not prove that reflux is causing the cough either. Other common causes of chronic cough still need to be considered.
What Does a Reflux-Related Cough Feel Like?
There is no single type of cough that proves reflux is responsible.
The cough may be:
- Dry or with some phlegm
- Persistent or recurrent
- Worse after meals
- Worse when lying down in some people
- Associated with throat irritation or frequent throat clearing
- Associated with hoarseness or a sensation of something in the throat
However, these symptoms are not specific to reflux. A similar cough can occur with asthma, post-nasal drainage, smoking, COPD, bronchiectasis, certain medications, and other conditions.
When Should Reflux Be Considered as a Cause of Cough?
Reflux becomes more relevant when a patient has a chronic cough together with symptoms such as:
- Frequent heartburn
- Acid or food coming back into the mouth
- Symptoms after meals
- Symptoms that are worse when lying down
- Recurrent throat irritation or hoarseness
CHEST guidance recommends considering reflux among the possible causes of chronic cough while also evaluating other common causes. In many patients, more than one condition may be contributing to the cough.
Does Every Patient with Cough Need Acid-Reducing Medicine?
No.
This is an important point.
A persistent cough should not automatically be treated with a proton pump inhibitor (PPI) simply because reflux is suspected.
CHEST guidance recommends that in patients with suspected reflux-related cough who also have heartburn or regurgitation, treatment may include medication to control these reflux symptoms along with appropriate lifestyle measures.
However, in patients who have a chronic cough without heartburn or regurgitation, PPI treatment alone is unlikely to resolve the cough and is not routinely recommended simply on the assumption that reflux is responsible.
How Is Reflux-Related Cough Diagnosed?
There is no single symptom or routine test that can always prove that reflux is responsible for a cough.
The doctor may first look for other common causes of chronic cough and assess whether the patient’s symptoms are compatible with reflux.
In selected patients, further testing may include esophageal pH monitoring or impedance-pH monitoring, which can assess reflux episodes and their relationship with symptoms.
Testing is particularly useful when the diagnosis is uncertain or when cough continues despite appropriate treatment.
How Is Reflux-Related Cough Treated?
Treatment depends on whether reflux is contributing to the cough.
Management may include:
- Treatment of confirmed or clinically suspected GERD
- Appropriate acid-suppressing medication when indicated
- Measures to reduce reflux, such as avoiding meals close to bedtime
- Weight reduction when overweight or obese
- Elevating the head of the bed in patients with troublesome nighttime reflux symptoms
It is important to understand that improvement in heartburn does not necessarily mean that the cough will immediately disappear. CHEST guidance notes that cough improvement may take considerably longer than improvement in typical reflux symptoms.
What If My Cough Does Not Improve with Reflux Treatment?
This is an important situation.
If the cough continues despite appropriate reflux treatment, it should not automatically be assumed that more reflux medication is needed.
The diagnosis should be reconsidered.
Other causes such as:
- Asthma
- Upper airway cough syndrome
- COPD
- Bronchiectasis
- Smoking or environmental exposure
- Certain medications
- Other lung diseases
may be responsible, either alone or together with reflux. CHEST specifically recommends considering the common causes of chronic cough rather than assuming reflux is the only explanation.
The Chest Clinic – Dr. Javed Husain & Associates
At The Chest Clinic, Karachi, patients with persistent or unexplained cough can be assessed for respiratory causes as well as conditions such as reflux that may contribute to chronic cough. A careful evaluation helps determine whether reflux is likely to be responsible or whether another lung or airway condition needs attention.
For appointments and information contact +923018479066, +923293364949, or email us at connect@thechestclinic.pk