Bipolar Disorder Support Group
Bipolar disorder is not just a single disorder, but a category of mood disorders marked by periods of abnormally high energy and euphoria, often accompanied by bouts of clinical depression. This is the place to talk about your experience with bipolar disorder, learn from others' experiences, and find support.
I think possession entails being taken completely over by them at times.
However, there is also the possibility of having multiple personalities.
But in my experience, demons are quite non-human, and stand the hair up on the back of your neck if you encounter them.
Then there is also the theory of sharing your body with someone else's spirit, but I don't know about that one.
There is no scientific way to prove any of it one way or the other, so it is all subject to individual interpretation.
But I don't let stuffy theologists spoil my interpretations with their scientific knowledge. That is not the end-all of it all.