In trying to explain to someone about SI (they were familiar with the term, but not reasons or actions), I found it really hard to explain, there is/was no single cause. The closest I could come was that the physical pain was necessary to offset the internal pain or it would overtake me. I have been hitting by bedroom door, and sometimes feel in a trance state. If I do it long enough, there are sounds that come from deep deep within, not from pain, not screams but something dark, rage, fear, hurt, confusion, something else, I don't know, is purged and released from my body, like its an emotional infection.. I guess my questions are: Do other SI get this trance? Do other SI have these vocal releases?