Thank you for the query.
If you do suffer from severe kidney
disease and hypertention you may be taking ACE inhibitors like Captopril
. This medicines do cause severe cough and in such case should be changed to sartans.
Other possible reasons of severe cough are asthma or COPD (especially if you do smoke), tuberculosis
, lung tumor or even a mass located below the diaphragm. I suggest you to have chest CT, blow test and abdominal CT.
Hope this will help.