y do bumps form or an area of the head swells up after getting hit on the head?

Question

Why does an area of the head that was recently hit swell up into a bump? And if it does... what does that mean... anything bad? Thanks

Answer 1

It is a defense mechanism of the body called an inflammatory response. See copied explanation below


Definition of Inflammatory response

Inflammatory response: A fundamental type of response by the body to disease and injury, a response characterized by the classical signs of "dolor, calor, rubor, and tumor" -- pain, heat (localized warmth), redness, and swelling.

Innumerable insults (a mosquito bite, a splinter, a virus infection, a bruise, a broken bone) can trigger an inflammatory response and dispatch cells and chemicals to the site to repair the damage. Inflammation is a key part of the body's defense system, an indispensable protective response by the body's system of self-defense

Answer 2

If I were you, I'd be more worried about the affect it has had on your ability to chain words together in a sensible order. how many fingers am I holding up? Hint.........one!