I am having heavy dry cough during nights and this time it's very heavy so for that I couldn't sleep properly and having stomach pain due to coughing heavily at nights.Like this I am getting cough frequently like once in a month and it stays for nearly 15 days .May I know to which specialist should I consult for permanent remedy of my problem.General physician says throat infection,seasonal change etc..but I am getting it again within 1 or 2 months .I want to find out root cause for this and make a solution.Please help me out in solving my health issue Thanks in advance.