For a typical patient with chickenpox who presents with chickenpox on the head, face, and trunk, the rash is usually a red blotchy rash that later turns into a clear, full blister and rapidly scabs, or scars, in about 2-3 days, so the onset of chickenpox is short. The majority of mild chickenpox is a self-limiting disease that heals in about 10 days with mild systemic symptoms and does not leave any scars after the chickenpox scars. Chickenpox is a contagious disease that can be prevented and treated. The typical diagnosis of chickenpox is not difficult, but it is important to pay attention to the active treatment of symptoms, improve care, change underwear regularly, and cut short nails. It is more effective to start oral antiviral medication within 48 hours of rash onset.