The common cold is mostly caused by viruses and has milder symptoms, mainly including cough, nasal congestion, and runny nose. It tends to resolve on its own, and the whole-body symptoms are mild. Viral colds usually refer to colds where a specific pathogen can be identified, also known as influenza, such as H1N1, H3N2, type A influenza, and type B influenza prevalent in the winter and spring seasons. Its whole-body symptoms are more severe, mainly including fever, sore throat, headache, whole-body muscle soreness, poor spirits, fatigue, and other systemic symptoms.