Running with a runny nose may be due to vasomotor rhinitis, allergic rhinitis and other causes. It is recommended to go to the hospital and follow the doctor’s instructions for treatment. 1. Vasomotor rhinitis. Vasomotor rhinitis is caused by mental tension and environmental temperature change. When the patient is running, it stimulates the small blood vessels under the mucous membrane of the nasal cavity, which results in nasal congestion, running watery nose and other symptoms. 2. Allergic rhinitis. Due to genetic factors, inhalation of pollen, fungi and other allergens induces allergic rhinitis. If you inhale air containing allergens while running, allergic rhinitis will be induced, resulting in symptoms of itchy nose, nasal obstruction and runny nose. Running with a runny nose is not only seen in the above mentioned diseases, so you should go to the hospital in time for examination and standardized treatment under the doctor’s guidance so as not to delay the treatment.