The use of neurophysiopathological techniques in the assessment of pain syndromes in occupational and rehabilitative medicine. Pain is one the major causes of disability. In occupational medicine this is translated into a loss of working days or the need to change jobs. In rehabilitation pain limits treatment and often lengthens recovery time. Neurophysiopathological techniques can be used to improve neuroalgological diagnosis and gain better understanding of pathogenic mechanisms thus allowing therapy to be targeted more precisely aiding the subject's social and occupational recovery.