Why do healing wounds feel warmer to the touch?

When you’re injured, your body inflames the area around it – basically by increasing bloodflow to that area. This allows the body to move lots of platelets to the area (to scab it over), lots of white blood cells (to fight infections), and to help repair the area and remove damaged bits.

So all the increased bloodflow to that area makes it warmer. If the warmth continues for too long, it’s a sign that the area could be infected, in which case the body is still pumping white blood cells to that area and keeping up the heat to fight off the infection.

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