I personally have a Mongolian birthmark that consumes half my chest and right leg. I've heard of Mongolian birthmarks being indicators of someone being Jewish. But otherwise, it's just a mark.
Browsing online I saw this quote:
If it's true about birthmarks being the spot where you were killed in your previous life then I feel bad for whoever Caesar reincarnated is
I messaged the guy and he claims it's a joke and theres no source. Doesn't even believe in reincarnation. Thinking about it all now, it makes sense going back to Cain and Abel.
So what does Judaism have to say about birthmarks? Is the quote above true to some extent?