Can gastroesophageal reflux disease (GERD) cause a chronic cough without heartburn?

Yes, it is possible for gastroesophageal reflux disease (GERD) to be a cause of chronic cough, even in the absence of traditional heartburn symptoms. A chronic cough is defined as a cough that lasts for more than two to three weeks [3]. In such cases, the patient may not realize that the digestive system is the source of the problem, which can delay proper diagnosis and treatment.

How does reflux cause a cough without heartburn?

Coughing is a natural reflex that helps clear the throat and airways. In some cases of GERD, acidic stomach contents may reach the throat or airways, causing irritation that leads to a chronic cough without the person feeling heartburn in the chest. This irritation can trigger the cough reflex as a defensive mechanism of the body [3].

Diagnosing reflux-associated chronic cough

Given the many causes of chronic cough, a doctor will begin with a comprehensive evaluation to rule out other common causes such as asthma, allergies, smoking, or chronic lung diseases [3]. Initial examinations may include chest X-rays or a CT scan to rule out structural lung problems like tumors or infections [2]. If no obvious pulmonary cause is found, the doctor may suspect GERD as a potential cause, especially if the cough worsens after meals or when lying down.

When are advanced procedures needed?

In cases where a clear cause for a chronic cough is not identified after initial tests, the doctor may recommend more specialized procedures. One such procedure is a bronchoscopy, which allows the doctor to visually examine the airways using a thin tube equipped with a camera. This procedure can be used to take samples of tissue or fluids if there is a suspicion of infection or abnormal growth in the lungs [1]. This procedure is relatively safe and is used to rule out serious respiratory diseases.

Treatment options and managing reflux-associated cough

If GERD is identified as a potential cause of the chronic cough, treatment typically focuses on reducing reflux. The doctor may recommend lifestyle changes, such as weight loss if you are overweight or obese, elevating the head of the bed while sleeping, quitting smoking, and modifying dietary habits [4]. Medications that reduce stomach acidity, such as antacids, H2 blockers, or proton pump inhibitors (PPIs), can also be used [4]. It is important to note that response to treatment may take some time, as irritated tissues in the throat and esophagus require time to heal.

For more information on chronic cough and when to consult a doctor, you can visit our comprehensive article on Chronic Cough: When is it just an annoyance and when should you see a doctor? (Arabic).

Medical references

• Bronchoscopy and Bronchoalveolar Lavage (BAL)
• Tests for Lung Disease Tests for Lung Disease
• Cough
• Treatment for GER & GERD - NIDDK