My father has been coughing since a week. This is dry cough. This is also accompanied by slight fever. Last week he was having difficulties in breathing which is fixed now. He also had fever which has reduced now but the cough is still continuing. He had slight swelling on his foot which is reducing now. What can be the solution for the cough? He is living in a small town and seeing a local physician. But his health issues are not subsidizing.