A runny nose is excess nasal drainage. It may be a skinny clear fluid, thick secretion or one thing in between. The drainage could run out of your nose, down the back of your throat or each.
The terms "rhinorrhea" and "rhinitis" ar usually wont to seek advice from a fluid nose. Rhinorrhea truly refers to a skinny, largely clear nasal discharge.
Rhinitis refers to the inflammation of nasal tissues. Rhinitis often results in a runny nose. Colds and flus: Mucus from illnesses can fill the nasal cavity and cause temporary nasal obstruction.
Crying: When you cry, tears drain through the tear ducts, into the nasal cavity, and then into the nose. Cold Weather: Cold weather can sometimes cause a reaction which produces mucus.