NCIthesaurus nasal cavity disease rhinitis SNOMEDCT_US_2025_09_01:70076002 disease_ontology DOID:4483 A upper respiratory infectious disease which involves irritation and inflammation of the mucous membrane of the nose due to viruses, bacteria or irritants. The inflammation results in generation of excessive amounts of mucus leading to runny nose, as well as nasal congestion and post-nasal drip. NCI:C34986 UMLS_CUI:C0035455 MESH:D012220