Burns are injuries to the skin caused by heat, electricity, chemicals, light or friction. They can range from minor first degree burns involving only the outer layer of skin to more severe third degree burns destroying both the outer and inner layers of skin. Treatment depends on the severity of the burn but may include cooling the burn, applying antibiotic ointment, wrapping it to prevent infection, and for more serious burns, fluid replacement, skin grafts or other procedures in a hospital setting. Complications can include shock, infection, organ dysfunction and respiratory distress if not properly treated.