Most colds with fever are caused by viral infections and may be accompanied by bacterial infections.
Most colds are upper respiratory tract infections caused by viral infections, and some patients may have concomitant bacterial infections. Viruses and bacteria multiply in the body, and their metabolites contain exogenous pyrogens. The thermoregulatory center of the body shifts upward under the action of the exogenous pyrogens, resulting in an increase in body temperature, i.e., the development of fever.
At the same time, the activation of the body’s immune system can also produce endogenous pyrogens such as leukotrienes, both of which can lead to fever. Colds are also associated with dizziness, nausea, poor appetite and other clinical symptoms.
When a cold is accompanied by fever, if it does not get better or even worsens, it is necessary to go to the hospital for further examination to clarify the cause of the illness, and use reasonable medication under the guidance of the doctor.