Nonallergic Rhinitis By Marvin P Fried, MD, Montefiore Medical Center, The University Hospital of Albert Einstein College of Medicine Reviewed / Revised Dec 2021 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Rhinitis is inflammation of the nasal mucous membrane, with resultant nasal congestion, rhinorrhea, and variable associated symptoms depending on etiology (eg, itching, sneezing, watery or purulent rhinorrhea, anosmia).