No, but people can lose their sanity and have moments which may appear a bit ghosty to those who aren't in-the-know. Whispering/talking to themselves, hyper eye movement, unsteady gait.
Have you seen this Trump guy? HA HA HA HA HAHAHAHAH HA HA HA HA HA H AHA HA HAHAHAHAHAHAAH H A HA HAH AHA HHA AHAH AAHA AA AHA A A A AHHHAHHAHAHAHAHAHAHAHAHAHAHAHHHH HHHAHAAHAHAHAHA A A A A A AHAHAHAHAHHAHAHA
Somewhat more than 20 years ago I was casually involved with psychic stuff for a period of about 3 years. I had a chance to meet people who had various kinds of psychic abilities. One guy showed me when given the right opportunity he could come to take over possession of a person's mind. I allowed him to do this to me. I could actually feel his 'power trying to make me do something that I was not sure I would be willing to do; I kept a firm grip on the table I was sitting at so I would not make any moves. He was kind of gloating knowing he could have had me under his power but 'released''me after about a minute . I wonder if he would not have released control -would I have lost my conscious awareness and become some kind of different personality? Would I alternate between being myself then change to the alternate personality? What kind of personality? How would I be able to be 'cured' if he hadn't released me? Seems there can be some strange forces 'out there' supernatural or maybe not.