The surgery for wheals is a minor clinical operation, which usually takes a shorter time. The operation time for a child to have wheals is roughly around 20-30 minutes, which includes anesthesia, intraoperative drainage, disinfection and other steps. 1. Anesthesia: In order to reduce the pain reaction during the operation and make the child cooperate with the operation, general anesthesia is needed for the child. 2. Intraoperative drainage: After the anesthesia has taken effect, the surgeon can turn the patient’s eyelids to find the most fluctuating part of the wheal and drain out the pus inside the wheal mass completely. 3. Sterilization: After the drainage is completed, the incision site needs to be thoroughly sterilized and any residual cystic wall or other material needs to be removed. The whole operation takes about 20-30 minutes, but the exact operation time depends on the severity of the child’s condition. It is recommended that children with wheals be seen promptly for evaluation of their condition and treatment as prescribed by the doctor.