Children with hives should have the option of going to the emergency department, pediatrics, or dermatology, depending on the criticality of the condition. Children with sudden onset of urticaria that occurs after exposure to highly allergenic foods or new medications, or that is accompanied by critical conditions such as difficulty breathing, throat tightness, hoarseness, loss of consciousness, severe abdominal pain, tachycardia, nausea, and vomiting should call the emergency number or go to the Emergency Department for urgent care. If hives attack at night, children should also hang up at the emergency department. Children who have chronic, recurring flare-ups that are suspected to be related to a history of exposure to sunlight, cold air, medications, food, alcohol, etc., accompanied by localized itching, numbness, and burning pain, and who are in stable condition should go to the pediatrics or dermatology department. If urticaria attacks at night require medical attention, children can visit the emergency department or the night clinic of pediatrics or dermatology. Families of children with urticaria should choose the appropriate department according to the child’s condition and follow the doctor’s instructions for appropriate treatment.