Causes of nasal strictness: Colds and nasal strictness are often related. A tight nose is a common symptom of a cold, and those who have tight noses are more likely to have colds. The main reason for the strictness of the nose is that after the nasal mucosa is damaged, it can not heal for a long time. Various kinds of viruses in the air grow and develop in the damaged area, forming a lesion! As a result, we often experience bothersome nasal symptoms such as stuffy, dry, and nasal allergies.