Seasonal colds can be caused by the common cold and influenza. The common cold is self-limiting and usually resolves in 5-7 days. Influenza requires antiviral treatment to improve. The exact time of recovery varies depending on the individual’s physical condition. People with good health generally recover faster. People with poor health, such as children or the elderly, recover more slowly. The common cold is a common acute viral infection of the upper respiratory tract caused by rhinovirus, respiratory syncytial virus, coxsackievirus, coronavirus and adenovirus. It is mostly circulating and occurs more often in winter and spring. The main symptoms of common cold are nasal congestion, runny nose, sore throat, etc. It is self-limiting and usually cured in 5-7 days, and the duration of illness can be prolonged if there are complications. Influenza is caused by the influenza virus. The onset of acute, high fever, headache, fatigue and generalized muscle aches and pains and other symptoms of intoxication is obvious, while the respiratory card he symptoms are mild. The onset of the disease is seasonal, often in winter and spring in the north, while the south can be epidemic throughout the year. Influenza usually requires the use of antiviral drugs at an early stage, and the recovery time is related to the individual’s physical condition and viral virulence. If there are seasonal recurrent cold symptoms, such as runny nose, sneezing, etc., it may not necessarily be a cold, but may be allergic rhinitis and other diseases. If you have recurrent bad or worsening cold symptoms, it is recommended that you consult the respiratory clinic in time and follow the doctor’s instructions for treatment.