Arian Page Russell has an odd skin condition known as dermographia.
…dermatographia, a condition in which her immune system exhibits hypersensitivity through the skin, causing painless, temporary welts that emerge when lightly scratched. She exploits this condition in her artwork by creating patterns on different parts of her body and photographing them as the skin becomes irritated and swells. A sort of skin tattoo. She has also created different wallpaper patterns using c-prints of her skin in all its irritated shades.