If all skin cells are regenerated every month or so. Why don’t scars go away. If not in a month then surely by a year all marks on skin should go away right. But some scars are permanent.
In: Biology
Scars are not cells but the dead waste of cells that are much harder to break apart and stick more than skin cells mainly because your skin cells are meant to fall off easily where not all cells are.
But scars do fade overtime like tattoos and given enough time they just may become undetectable but you’ll probs be totes dead by then.
I used to have this gnarly scar on my leg from when I got in a fight and actually didn’t get beat up for once and a piece of glass tore my ankle open. It was such a cool scar. Now like 20 years later its a weak little baby scar and frankly just an embarrassment now.
If you have severe scurvy the collagen in the scar can get reabsorbed for your desperate body to maintain collagen levels elsewhere causing the wound to “reopen”
This is usually when scurvy is already terminal though.
Everything regenerates if you wait long enough. Just certain processes take longer than human life spans.
If you have some extra time, the [scar wiki page](https://en.wikipedia.org/wiki/Scar) has a bunch of different cases and definitions that might be interesting to you.
But for ELI5, when you get hurt you no longer have your flesh in its right place. Your body can replace that flesh, but because it can’t replace the middle parts before all the edges of the wound are fixed, it can only fix it in a certain way. That certain way ends up in scars, instead of the original flesh.
Consider a blanket with a hole in it. If you could only repair it by adding threads to the edges of the hole (instead of using a patch), then the repair would feel different than the rest of the blanket (even if you used the same kind of threads the blanket is made out of).
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