This document outlines the various symptoms associated with nasal diseases, including nasal obstruction, nasal discharge, epistaxis, disturbance of smell, sneezing, post-nasal drip, cough, headache, swelling or deformity, change in voice, and snoring. It describes the potential causes of each symptom and provides examples of diseases that can cause intermittent, progressive, or persistent nasal obstruction and watery, purulent, or bloody nasal discharge.