apgras Delusion Theory – This is another paranoid delusion when the person in question believes that someone they know is not in fact their best friend but an imposter disguised to look exactly like them. This state of doubt about identity can also be transferred to objects and even places. They can then begin to believe that they are in a totally different place than the one they are actually in. One other symptom that some people have experienced is losing a sense of time.
