A runny nose when your back gets cold is a symptom of a cold or allergic rhinitis that has been induced by the cold. If the body’s immunity is low, a cold can occur after the back is cooled, and the patient often shows symptoms such as nasal congestion and a runny nose. Back cold at the same time, the cold air may also have a stimulation of the nasal cavity, can induce the onset of allergic rhinitis, runny nose, sneezing and other symptoms. If you are prone to runny nose when your back gets cold, you need to pay attention to the cold and keep warm to avoid getting cold. You also need to pay attention to a balanced diet and nutrition, moderate exercise, avoid staying up late, etc., to help improve the body’s immunity. Back cold runny nose, if the symptoms are not serious, can strengthen the rest and nutrition, usually can gradually improve. If the symptoms are serious, you should consult a doctor in time and follow the doctor’s instructions.