like some have said, it could be either dissociative related or psychosis, etc.

from my understanding, if it is dissociative, meds won't generally cause alters/parts to go away/be quiet, etc. sometimes, it might, but generally i don't think so.

when i took antipsychotics (zyprexa/olanzapine, risperdal, or seroquel), the dissociation did not lessen, and the others also were still there and active.

you described violent thoughts, etc. i also had that kind of thing happen. i believe it was a mix of OCD and trauma related stuff as i had other OCD traits along with it and other types of urges, images, etc. so it's possible for you that it could also be an extension of a PTSD issue and anxiety or something. just a guess anyway.

talking to a professional about it more in depth might help.