The proper treatment of a burn is determined by the seriousness or degree of the burn.  A first degree burn produces redness and swelling which you might get from a sunburn.  A second degree burn will cause blistering of the skin.   Third degree burns are the most severe and result in dark and charred skin.

Medical attention should be sought immediately for a 2nd degree burn over a large area of the body or any 3rd degree burn.  It's important to keep the person calm and comfortable until the ambulance arrives.  Dilated pupils, pale completion, shallow breathing, clammy skin and a rapid or weak pulse could be signs of shock and the persons feet should be elevated.