NCIt definition : Excessive mucous secretion in the back of the nasal cavity or throat, causing sore
throat and/or coughing. It is usually due to allergic rhinitis or a cold.;
Alternative definition : CTCAE: A disorder characterized by excessive mucous secretion in the back of the nasal
cavity or throat, causing sore throat and/or coughing.; NICHD: Excessive mucous secretion from the nose draining into the oropharynx.;