A burn center, burn unit or burns unit is a hospital specializing in the treatment of burns. Burn centers are often used for the treatment and recovery of patients with more severe burns. The severity of a burn, and therefore whether a referral will be made after the patient is treated and stabilized, differs depending upon many factors, among them: the age of the victim (burns to infants and toddlers or to those over age 65 are generally more serious, particularly if the face, head, respiratory system, chest, abdomen, groin, or extremities are burned; those who are not in these age groups can be more affected if they are or were already ill, injured, or immunocompromised), the total body surface area that is burned (the rule of nines), if proper treatment and referrals are delayed or the