Pain in Cancer Patients with Advanced Stage Disease

Oncologic pain, in some situations, happens quickly. The transition for a process of advanced disease may occur during the state of diagnosis, state of treatment, because of the ineffectiveness of the treatment, or afterwards in a case of relapse. The pain is defined by International Association for the Study of Pain (IASP), as “an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage” [1]. The pain is a vital sign whose manifestation leads to the search of health care. In this way is of great importance as warming signal of physiological, psychological, social or spiritual change, in a latent state. No pain control may be the cause of pathophysiologic dysfunctions which lead to physical, psychic, social and spiritual changes that affect patient and caregiver.