I'm going to go with ABSOLUTELY NOT! I hope a lot of people read this thread, too, because when I hear people discuss it as fact it really gets me going. Good question though.
I doubt it, I know I have had back pains on acid, but I dont believe this as a fact at all. Just like a bleeding brain scab..
I thought it was brain fluid(NOT blood) but I'll look into it, all I really know is the mind stuff, nothing physical.