Generally speaking, the most common causes of nasal congestion are various functional and organic diseases, such as various colds, deviated nasal septum, enlarged turbinates, allergic rhinitis, acute and chronic sinusitis, nasal foreign bodies and various benign and malignant tumors of the nasal cavity.
In addition, long-term abuse of “nasal drops” or “ephedrine” and other decongestants, may also lead to nasal congestion. Although these drugs can relieve the temporary discomfort of the nose, but the role of the symptoms but not the root cause. After the use of drugs, there will be secondary vasodilation, so that the symptoms of nasal congestion again or even aggravated, and over time, even the formation of drug rhinitis.
Sometimes, nasal congestion may also be related to poor living conditions. For example, the nose is often stimulated by cold air (cold air conditioning, cold weather), irritating odors, tobacco smoke, volatile organic compounds, etc., can induce nasal congestion, affecting the smooth flow of breathing.