Chickenpox is caused by a viral infection and generally does not leave a scar, but if a combined bacterial infection occurs during chickenpox and the skin breaks down, a scar may be left. The specific treatment is as follows: 1. medication: if the scar is relatively fresh in the early stage especially within three months, the fibrous tissue has not been fully formed, you can apply urea vitamin E ointment or the like to help reduce the formation of discoloration and remove the scar. 2. surgical treatment: if the scar is more than three months old and obviously appears depressed, surgical treatment is needed, you can go to the plastic and cosmetic department and choose surgical excision or laser-assisted treatment. Patients must pay attention to daily skin care, including cleaning care and avoiding direct sunlight. The diet should be light, with less greasy food and no spicy or stimulating food.