Merfolk Descendant Traits
This is not to say humans with these skin conditions originate or descend from mer. However, it can indicate a connection to the mer lines.
My father had eczema and my mother had keratosis pilaris on her legs when I was younger.
I have had diagnosed seborrheic dermatitis, lichen planus, psoriasis, and keratosis pilaris.
I also have had a dark cafe au lait spot on my stomach for most of my life.
There are now many types of people who call themselves supernatural. There are hybrids, clones, true supernaturals, and those who use enchantments. An example of this is werewolves who are born versus those witches who use enchanted talismans, like girdles, to shapeshift into those beings–among others–depending on the magical charm or item.
And, of course, there are humans who want to claim to be supernatural, to be of supernatural lineage, or to be the destroyers of those beings and lineage–usually because they aren’t either of those things.