How do I explain scars when a young child asks about them?

Personally, I have many younger cousins. and when they ask about my scares, I explain to them that they are my battle wounds. They show how strong I am, Of course I wouldn't tell them exactly how I got them because they are still young and don't need to know about that yet.

How about telling them you were in this awesome adventure where you saved the world from an evil villain that planned to rule everything. So you got your battle scars but it's alright because you defeated the villain. Or you can just tell them a cat scratched you accidentally. The thing is, people have scars and that's part of their story. If a young child asks you about your scars you just tell them gently what you feel comfortable about. Don't be too dark. Be yourself and if you wanna shrug it off and not talk about then it's your choice.

Young children are curious little things so don't be straight telling them you intentionally hurt yourself. You can instead you had a pet that hurt you or just accidents...

Personally, I always described mine to small children as marks from winning a battle or hard fight in my life against someone or something that was trying to hurt me. Might be something that could work for you if you want to keep it a little whimsical for them. Could also use the route a friend of mine does, and tell them that you fight dragons in your free time.

Scars are memories sculpted in our flesh. A reminder of what we´ve been through and how we have learned from what occured.

It depends on the kid, and what you're comfortable with. For a kid that sees they're obviously scars and asks how you got them, you can say that you fought a scary monster. If the kid doesn't see that they're scars, you don't have to tell them. You could use it as a teachable moment about how everyone's bodies are unique -- some people are short and others tall, some have birth marks, people have differently colored hair, sometimes people get new marks like scars or tattoos or hair colors later in life, and so forth. If the kid is very small, you might be able to just tell them that you have stripes, and ask them about their favorite stripy animals like zebras and tigers.

they are war marks, i went to a war a while ago and i got them in there but soon theyll fade away

Sometimes it's best to be vague with young children, as they don't always require an in-depth answer. Something like, "I got hurt and it left a mark." If they ask how you got hurt you could say that it was a cut or a scratch. You don't need to give more information than is appropriate for their age.

Tell them they're proof that things get better or if they're younger children just tell them they're booboos because they probably won't understand the first reason.

I always say they are my tiger stripes or each one shows an act of surrender which turned into strength.