Harvard Medical School Guides

Harvard Medical School Guide: Understanding Inflammation

If you’ve ever twisted your knee, cut your finger, or been stung by an insect, you have firsthand experience with inflammation. The familiar sensations of pain, redness, swelling, and heat that result from an injury or infection are hallmarks of the inflammatory process. Inflammation represents an essential survival mechanism that helps the body fight off hostile microbes and repair damaged tissue. Yet there is another side of inflammation that can be harmful rather than…

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