The word analgesia , etymologically, means denial or lack of pain. This is the goal of pain reliever medications. According to the International Association for the Study of Pain (IASP), pain is defined as the unpleasant sensory and emotional experience. This experience is associated with a real or potential tissue injury.
There are two types of pain: acute and chronic. They differ in terms of sensory experience and also in terms of the emotional experience they involve. Thus, they require different analgesic medications.
Acute pain is derived from a tissue injury, and disappears with the healing of it. An example of acute pain is postoperative pain. On the other hand, it is difficult to find a specific tissue lesion that justifies chronic pain. In addition, they are very spread over time. An example of chronic pain is migraine or osteoarthritis.
As we have indicated before, the emotional component is different in acute and chronic pain. In the case of acute pain, it is common to experience irritability, anxiety and anger. In the context of chronic pain, feelings that tend to depression are experienced.
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