[ABSTRACT] INTRODUCTIONDaily a high percentage of children are subjected to surgical interventions, clinical patterns which envolves pain (otitis, migraines, burns, cancer) as well as painful diagnosis or therapeutic procedures. However low importance has been attached to the relief of the pain of these children due to mistaken concepts about perception and tolerance to pain and the limations to value its intensity.VALUATIONPain is a personal experience and it sholud be evaluated sub