What is pain? If you ask someone to give you the definition of pain, they will usually say something that hurts. Registered nurses must know the definition of pain and how to identify it in their patients. However, Abdalrahim, Majali, Stomberg, and Bergbom (2010) suggest that nurses have not received adequate training in pain management and suggest that lack of knowledge hinders their ability to adequately control their patients' pain. Therefore, the unethical treatment of pain can be attributed to nurses. The author Abdalrahim et al. (2010) stated that nurses are not properly trained in pain and pain management; In order to better form an opinion on this theory, it is imperative that we have a precise and consistent definition of pain. According to Engebretson, Monsivais, and Mahoney (2006), “pain results from somatosensory, cognitive, and emotional events and, in the case of chronic pain, from neuroplastic changes that alter physiology and modify the responses of the nervous system to various stimuli.” There are two distinct types of pain, acute and chronic. Ferrell (2005) suggests that acute pain can manifest through different types of trauma (sprained ankle, broken leg, stubbed toe, pulled muscle, etc.), surgical incisions, or body parts manipulated during surgery. surgery, and even by the effects of a cold. Chronic pain can be described as many medical conditions, for example: migraines, arthritis, clinical depression, fibromyalgia, and spinal stenosis (Ferrell, 2005). The best definition of pain that nurses should adhere to was that of Margo McCaffrey (1968): "Pain is what the person experiencing it says, and it exists whenever the person experiencing it says so." ". Patients, if possible, have the right to do so. ..... middle of article ......lifton Park, NY: Delmar Cengage Learning.Copp, L., A. (2006). An ethical responsibility in pain management. Journal of Advance Nursing, 55(1), 1-3. Engebretson, J., Monsivais, D. and Mahoney, JS (2006). Ethics of pain management practice. American Journal of Pain Management, 16(1), 21-35. Ferrell, B. (2005). Ethical Perspectives on Pain and Suffering. American Society for Pain Management Nursing, 6(3), 83-90.Joint Commission on Accreditation of Healthcare Organizations. (January 19, 2011). Facts about pain management. Retrieved from http://www.jointcommission.org/pain_management/McCaffery, M. (1968). Theories of nursing practice related to cognition, bodily pain, and human-environment interactions. Los Angeles: University of California, Los Angeles Student Store. Trossman, S. (2006). Improving pain management: call to action. American Nurse Today, 1(3), 29-30.