Where do birthmarks come from?
In: Biology
There are 2 general types: one is due to blood vessels, the other is due to melanin concentration. There is a recent episode of Stuff You Should Know podcast that talks about birthmarks. [Sysk podcast: birthmarks ](https://open.spotify.com/episode/4S30TxZNd1vyTc2pBDZn8h?si=CbkoJ9v_SKWjy71tsfb1uA)
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