Chickenpox in people is mainly caused by infection with the varicella zoster virus, and such people are usually not vaccinated against varicella zoster virus. If you have been vaccinated or infected with chickenpox, you will not get chickenpox again. The clinical symptoms of most children are mild, usually a day of fever and a rash that first appears on the trunk and then spreads throughout the body, most patients have a low fever and a rash. Most patients have a low fever and rash. Antiviral drugs can be used appropriately, and the clinical symptoms of most patients will be gradually relieved after a course of treatment for about 7 days. A very small number of patients, especially those with low immune function, may develop complications such as encephalitis, myocarditis, pneumonia, etc. Such patients need timely hospitalization.