Inflammation is the body's protective response to irritation, injury, or infection. It's characterized by redness, warmth, swelling, and pain. When tissues in your body are injured, the inflammatory process begins immediately. This process helps protect and heal damaged tissue.
What causes inflammation?
Inflammation can be triggered by:
How does inflammation work?
When an injury or infection happens, immune cells are sent to the site to begin the healing process. Blood vessels swell to allow more immune cells into the tissue. This causes redness and warmth. Immune chemicals also make blood vessels leakier, allowing white blood cells to get to the site of injury more easily. This leakage of fluid into tissues causes swelling. Immune activators make nerves more sensitive, causing pain. These responses help contain infections and prevent further damage.
What are the key functions of inflammation?
Inflammation has 3 main functions:
Once the threat is neutralized, the inflammatory response turns off. Excess fluid and immune cells are reabsorbed back into circulation. Swelling goes down, blood vessels constrict, and tissues return to normal.