Ariana Page Russell is a fine example of an artist really working with what she's got - in her case, a skin condition called dermatographia. Here she explains it in her own words:
My own skin frequently blushes and swells. I have dermatographia, a condition in which oneâ€™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 skinâ€™s surface is lightly scratched. This allows me to painlessly draw patterns and words on my skin, which I then photograph.
Russell also takes these images one step further creating temporary tattoos and wallpaper from the photographs of her own skin welts.