Except for rare individuals who suffer from a congenital absens of pain perception, everyone has experienced pain.Pain,therfore,may mean something different to almost every person.Because it is a personal experience,pain remains difficult to define. Local infiltration of paintful areas with ozon is the most commonly used technique in the treatment of pain. Infiltration into an area of pain with ozone is the simplest and most common analgesic block used in the treatment of pain.