Thermal burn injuries occur with a hot local environment. The burned skin seen here over the torso and head of a child occurred from a fire. The treatment and prognosis depend to a great extent upon the extent of the burn injury -- the total body surface area (TBSA) involved. Other factors include age of the patient, underlying diseases, and the presence of an "inhalation injury" from breathing in hot gases, which typically occurs with fires in an enclosed space such as a building.