What is the difference between the common cold and the flu?
Generally speaking, "flu" refers to influenza. There are several differences between the common cold and influenza, including differences in pathogens, prevalence, symptoms, treatment approaches, as well as complications and severity. A detailed analysis is as follows:

1. Different pathogens
The common cold can be caused by various viruses, such as rhinovirus, coronavirus, and parainfluenza virus. Sometimes it may also be caused by bacterial infections. Influenza is caused by the influenza virus, mainly types A and B, with type A being the most common.
2. Different levels of prevalence
The common cold can occur throughout the year, especially during seasonal transitions and in winter and spring. It is usually sporadic and does not lead to widespread epidemics. Influenza is highly contagious and can rapidly spread among large populations within a short period, commonly occurring in winter and spring.
3. Different symptoms
The common cold has a relatively sudden onset. Early symptoms include a dry, itchy throat, nasal congestion, and runny nose. The nasal discharge starts as clear fluid and may be accompanied by a sore throat, but generally does not involve fever. Influenza has an incubation period of usually 1 to 3 days and an abrupt onset, often starting with fever that can reach as high as 39°C to 40°C, accompanied by chills and general discomfort.
4. Different treatment approaches
Treatment for the common cold is mainly symptomatic, such as using antipyretic analgesics and cough suppressants, and it usually resolves quickly. Influenza treatment typically follows medical advice and may involve medications such as oseltamivir phosphate capsules, baloxavir marboxil tablets, or Pudilan anti-inflammatory capsules, with management for fever reduction, pain relief, and cough suppression tailored to the patient's condition.
5. Different complications and severity
The common cold generally does not cause complications, although occasionally it may lead to sinusitis, lower respiratory tract infections, or asthma attacks, and it poses minimal risk. Influenza typically has a recovery period of 4 to 7 days, but coughing may persist for several weeks. A small number of patients may develop severe complications from influenza, such as pneumonia or myocarditis.
In daily life, maintaining a balanced and nutritious diet, engaging in moderate exercise, keeping a regular sleep schedule, and maintaining a positive mood can help enhance the body's resistance to illness and reduce the occurrence of diseases.