I have autism, aspergers syndrome, ADHD, OCD, ODD, dermatillomania. I pick at the inside of my lips and cheeks and I pick at the greasy, volumated parts of my hair. I don t pull out my hair like trichotoillomania though. My main question is, when I pick my lips and they sometimes bleed, and the blood is all over my fingers, I lick/suck the blood off my fingers and lick the blood inside my mouth. I disturbingly enjoy the taste of my blood. I mean, I love it. Why do I find it delicious?