Rdgrad, your post is very relatable for me as I also experience much of what you've described. I find it very difficult to deal with, and am in an almost constant state of fear/terror - which only exacerbates my depression, anxiety, fatigue, etc etc. Intrusive thoughts, 'voices', and the hallucinations can be sparked/triggered by many things - from extreme anxiety to OCD, to cptsd, to medical issues. If you feel inclined please research hypnogogic hallucinations and hypnopompic hallucinations; the former occurs during the period from wakefulness to sleep, the latter from sleep to wakefulness. I wish you the best, and hope you can find some support and help with what you're going through <3