“Phlegm” in the morning tells the disease.
“Phlegm” in the morning tells the disease. Causes of phlegm after waking up Assoc. Prof. Dr. Songklod Iamchaturaphat Doctors at Chulalongkorn Hospital, Thai Red Cross Society identified the causes of phlegm after waking up as follows: Certain sleeping habits can cause air to enter the throat. This