Burns can be caused by flames, ultraviolet radiation, hot liquids, electricity, lightning and certain chemicals. All burns require immediate first aid treatment. Partial and full thickness burns require urgent medical attention. Full thickness burns often require skin graft surgery. Simple analgesics (such as ibuprofen and acetaminophen) and opioids such as morphine didn’t used in 3rd degree burn because the burnt place is painless. The "Wallace Rule of Nines" is the most common method of determining body surface area. The most commonly used resuscitation formula is the Parkland formula which calculates the amount of fluid required in the first 24 hours.