Patients with colds are generally caused by viral infections and are often self-limiting diseases, usually recovering completely within about a week. In a minority of patients, different degrees of cough may occur later on. For such cases, where there is throat itchiness and varying degrees of dryness in the throat, or even cough symptoms, it is generally not necessary to continue with cold medicine. Instead, antiviral medications and throat-clearing drugs can be used for symptomatic treatment to relieve the cough that appears later. As for the later cough, if it is a dry cough, use some cough suppressants. If there is phlegm with the cough, appropriate cough suppressants should also be used, along with antibiotics for symptomatic treatment, to provide relief. However, the use of cold medicines that relieve nasal congestion and runny nose is generally not advised at this stage.