A cold can cause herpes, which is an upper respiratory tract infection caused by a viral infection with clinical symptoms such as fever, cough, nasal congestion, runny nose and sore throat, but it can also easily cause herpes at the corners of the mouth, and some cold patients can also develop herpes all over the body, or herpes zoster between the ribs on the chest and back. This is because on the one hand, a cold can lead to a decrease in a person’s resistance after a cold, which can easily get an opportunity to get infected with herpes simplex virus and develop herpes simplex, and with herpes zoster virus and develop herpes zoster. On the other hand, colds are caused by coxsackie virus infection, which can also cause herpes, commonly as herpes at the corners of the mouth or lips. Therefore, the appearance of herpes after a cold is a relatively common phenomenon.