He is breathing from his mouth in night and morning .and very much noise occurs when h breath. When I am asking the reason he said that his nose is closed just bcz cold .but in hav notice that no cold in the daytime. What is the reason.

Dr. (Major) Alok KumarDentist16yrs exp

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Hello lybrate-user, breathing through mouth when at rest is not normal. Although there are various reasons for the same, the most common cause is obstruction in the airway. The most common cause of obstruction in airway is upper respiratory tract infection in other words cough & cold. If mouth breathing persists even without cold then there may be other causes for obstruction. I will advise you to visit an ENT specialist who after doing a thorough check up will give you the right advice. Hope this helps, all the best. 

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