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How does the body heal a wound?

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Quick answer

The body heals a wound in stages. First, blood clots to stop bleeding; then the immune system fights infection and clears debris; next, new tissue and blood vessels rebuild the area; finally, the new tissue strengthens and remodels into a scar.

Step by step

  1. Blood clots quickly to stop the bleeding.
  2. The immune system fights germs and clears debris.
  3. New tissue and blood vessels rebuild the wound.
  4. The area strengthens and remodels, often into a scar.

People also ask

How does the body heal a wound?
Through stages: clotting, fighting infection, rebuilding tissue, and finally strengthening into a scar.
Why do wounds form scabs?
A scab is dried, clotted blood that seals the wound and protects it while new skin grows underneath.
Why do some wounds scar?
Scars form where the body rebuilds tissue quickly with collagen rather than perfectly replacing the original skin.

Part of the guide: How Your Body Works →