Why is regional infection or inflammation of the skin usually very painful?

Regional infection or inflammation of the skin is typically very painful due to the activation of pain receptors in response to tissue damage and the release of inflammatory mediators, such as prostaglandins and cytokines. These substances increase sensitivity to pain and can lead to swelling, redness, and heat in the affected area, intensifying the sensation of discomfort. Additionally, the skin has a high concentration of nerve endings, which further amplifies the pain response during infection or inflammation.