People or ghosts can be in the environment and cause pain in the body, mind and emotions. If you are not aware of the energy, you will think it is your own. For people who were or are in close contact to a poltergeist. A poltergeist is an area of intense energy where there may be movement of objects, visions, often the result of intense violent events, intense trauma that occurred in the area to create the poltergeist. Ghosts are not poltergeists. People can absorb the poltergeist energy by living in a house where this trauma occurred.