Although it is unusual to have the cough with having the medications that you are taking, I believe that it could be the azithromycin which may be causing you to have the symptom. Nevertheless, it is very rare even with that medication. I wonder if the air purifier is also taking away the moisture in your home and making you to have the cough. If you have already spoken with your pulmonologist and he has recommended that you consult a psychiatrist, we can be of help if you give us more information. We can suggest medications after a thorough evaluation.
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