Nasal congestion is the condition where the tissues in the nose, including the sinuses, are irritated and swollen. The irritation causes the production of mucous, and the swelling causes difficulty breathing.
Too many people.
Rotavirus
Nasal congestion can be caused by a common cold. It can also be caused by seasonal allergies and from dust, dirt, etc.
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vitamin c
sinusitis
Congestion in the lungs or (more likely) bronchial tubes.
It can be anything from a cold, allergies to upper respiratory infection.
The heat makes the mucous more liquidy, loosening the pressure that causes congestion. The same applies to ear wax build up.
Patting on the back, what is referred to as tapotement, helps loosen the phlegm in a person's lungs. If they have pneumonia or other condition that causes congestion, this will help them clear out their lungs. If the cause of the congestion is unknown, then a visit to the doctor would be a good idea. Be sure to ask them if it is OK to do patting on their back.
I Had A Colonoscopy and I have Congestion in the Cecum; Cold Forceps Biopsies were performed. Is this serious?