I know this is really gross but im not sure what to do about it. I know someone who eats skin off her toes,fingers and on the insides of her cheeks and lips, also eats nasal discharge, vaginal discharge, pubic hairs, blood and scabs,eyes crusts,finger nails, toe nails and hair. I think that about covers it. Is this serious or harmless? I want to know as much information as possible about why someone would do this?