In clinical practice, colds are often caused by a decrease in the patient's immune function, accidental exposure to cold, or infection by viruses, bacteria, and other pathogens resulting in nasal congestion, runny nose, and sneezing. Typically, colds can be cured within about a week through timely medical treatment. Clinically, about 80% or even more of cold cases are primarily due to viral infections. General mild viral colds belong to self-limiting diseases and can heal by themselves within about a week. Therefore, for cold patients, even if these symptoms appear, patients with relatively good immune functions may not require medical treatment and can recover on their own.