A stuffy nose, or nasal congestion, may be an early COVID-19 symptom. Allergies, colds, sinusitis, and the flu may also cause a stuffy nose. Allergies typically cause nasal congestion if you come ...
A stuffy nose, or nasal congestion, can affect as much as 30% of the population at any given time. It occurs when the lining of your nose becomes swollen due to inflamed blood vessels. A runny ...