The causes of numbness of the bridge of the nose include physiological factors, sinusitis, tumors and so on. 1. Physiological factors: for example, when the outside world temperature is low, the bridge of the nose can appear after the cold numbness for a short period of time, when returning to the warm environment, the numbness gradually return to normal. 2. Sinusitis: when this disease develops, patients may have the feeling of having no airflow, pus flow, headache and numbness of the nose. 3. Tumor: when suffering from nasal tumor, the sensory nerves of the nose are infiltrated by the tumor, and the symptoms such as numbness of the nose can also appear. When the symptoms of numbness of the bridge of the nose continue to be unrelieved, you should go to the outpatient clinic of the hospital for consultation, and then go through the examination of the nasal cavity and other parts of the body to clarify the cause of the disease and then treat the symptomatic disease.