Scratch tattoo

Ariana Page Russell (Ariana Page Russell) – artist, in a sense,
the contents of the heroic spirit, a case in which talent can bring
the benefit of physical ailment. Here is her words:
“My own skin frequently blushes and swells. I have dermatographia,
a condition in which one’s immune system exhibits hypersensitivity,
via skin, that releases excessive amounts of histamine, causing capillaries
to dilate and welts to appear (lasting about thirty minutes) when the
skin’s surface is lightly scratched. This allows me to painlessly draw
patterns and words on my skin, which I then photograph.”