A low grade GERD (acid reflux) can cause a chronic cough.
The nerves that run from the lungs share the pathway around the esophagus, and cause shortness of breath, and coughing, if stimulated by acidic reflux. If the reflux is mild, that cough may be the only symptom.
Also post nasal drip can set off the cough reflex.
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Weezie looking at petunias 8.25.2017
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