Chickenpox is caused by the varicella-zoster virus infection and is highly contagious, primarily spreading through the air or droplets. Once infected, it quickly spreads to children or older adults who are in contact with each other. It is best for a child with chickenpox to go to a dermatology department at a formal hospital for antiviral medication treatment. Some children may develop a high fever and can take some fever-reducing medicine appropriately; if there is an inflammatory infection, some anti-inflammatory drugs can be taken as needed. During treatment, it is important to isolate, drink plenty of water, and eat a light diet. Try to avoid going outside in the wind or to crowded places to prevent cross-infection. (Doctor's answer is for reference only; medication should be taken under the guidance of a professional physician, do not take medicine blindly.)