Doctors use "degrees" to measure the depth of a burn.
First–degree burns are on the surface of the skin. They are mild burns. Treat first–degree burns with cold water. Aspirin may help relieve pain from first–degree burns.
Second–degree burns are deeper, under the skin. They blister and are more serious than first–degree burns. Treat second–degree burns by covering them lightly with dry, sterile bandages. Apply no pressure.
Qualified medical personnel should inspect second–degree burns.
Third–degree burns are the deepest and go through the skin to the flesh. They always require medical attention. The victim may not feel much pain due to nerve damage. Cover third–degree burns lightly with dry, sterile bandages, and get qualified medical help.
All victims with second– and third–degree burns should be treated for shock. Loss of body fluids will increase the danger of shock.