Chickenpox (varicella, chickenpox) is an acute infectious disease caused by the initial infection with varicella-zoster virus. It occurs mainly in infants and preschoolers, and is more severe in adults than in children. The chickenpox rash appears in batches, with blotches, herpes and crusts appearing simultaneously in the same area. The rash is also seen on the mucous membranes of the mouth, pharynx, conjunctiva, and vulva, and begins as a red papule that quickly turns into a herpetic rash that breaks down into small, shallow ulcers and then heals. The most common clinical condition is typical chickenpox, and preschoolers have the most patients. (2) Prodromal phase: 1-2 days before the rash appears, with mild flu-like symptoms such as low-grade fever, headache, sore throat, cough, and general malaise. (3) Rash stage: Chickenpox is usually concentrated on the trunk, head and face, and then spreads to the extremities; the ends of the hands and feet are rare. The symptoms of chickenpox at this stage will have a significant change process. Chickenpox is self-healing for children with normal immunity, rarely combined with encephalitis, pneumonia, myelitis, etc. Even if there are complications most of them can be cured after treatment and there will be no sequelae, so chickenpox does not require antiviral treatment for children under 13 years old, and acyclovir antiviral treatment is recommended to be started within 24 hours for children with low immunity and for children and adults over 13 years old. If the skin is itchy, topical application of stove glycolic lotion can be applied to relieve itching.