Our expert says:
There are many causes of chronic cough, especially if you have rheumatoid arthritis. Post-nasal drip itself is a important cause of chronic cough that could explain most of your symptoms. Other common causes may include acid coming up the food pipe (GORD). The possibility of lung involvement from rheumatoid arthritis cannot be excluded, including other conditions like asthma. I suggest that you consult a respiratory specialist who can work through these possibilities and provide a sensible way forward.
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