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Pain - Definition


Pain is an unpleasant sensation felt when a tissue is damaged and provokes the reaction of certain receptors that may be in the viscera, the muscles, or the skin. Pain is the result of a nociceptive (nerve) message transmitted to the brain by peripheral nerves via the spinal cord. According to individuals and their degree of sensitivity, pain can be felt with a varying level of intensity. It is considered a sickness in its own right when it is chronic. On the other hand, acute pain is a symptom rather than a disease.