My father is suffering(earlier also he was suffering from cough generally in cool air) from chronic cough (he is a diabetic person) and few days earlier he got high fever, on concerning,  dr. told that its pneumonia and gave some tablets and syrup he got relief from cough for 2 days but now he is again getting dry cough sometimes even he is unable to sleep at night due to cough. He is taking both pneumonia and diabetes medicines, sleeping in cooler worsen his cough. He got little relief after stopping diabetes medicines for a day but very little relief. Dr. Suggested for bulgum test but he is not getting bulgum. What to do next suggest me.