A poltergeist haunting is characterized by the violent manipulation of physical objects, such as items flying through the air. There is some disagreement among the professional community regarding what a poltergeist actually is. The most common theory is that it is the presence of a living being (usually an adolescent female) that brings energy to a home that a spirit, or poltergeist, uses to interact with the living.
Removing that person from the environment will end the poltergeist activity. However, if another human with a unique life energy enters that house, the poltergeist may harness this energy and continue to torment the residents of the home.
In this case, attempting to remove the poltergeist on your own is not recommended. Go to the Removal page and find the directory of paranormal organizations, so you can contact a professional to cleanse your house.
If you’re uncertain about whether or not you have a poltergeist or another type of spirit, find out about the 7 indications of a poltergeist haunting.
This site provides more detail on the power of poltergeists, and includes an interesting case study on the Bell Witch Haunting