Depth and Area of Burns

There are three methods used to determine the severity of a burn.

  1. Superficial burns affect the outer layer of skin only, such as sunburn.
  2. Partial Thickness burns affect the deeper layers of skin.
  3. Full Thickness burns can affect all layers of skin, tissue, muscle, and bone.
Burn Area Assessment
Head and neck9%
Each arm9%
Front of chest9%
Upper half of each leg9%
Back of chest9%
Lower half of each leg9%
Lower half of back9%

NOTE: A child and infant’s head is larger than an adult’s head in proportion to their bodies. Therefore, a child and infants head are classed as 18%.