The idea that abnormal behavior or a medical condition is evidence that a person is under the control of a supernatural power or spirit. This belief was most commonly held in religion and medicine of the medieval period and is also held in many tribal cultures today.

Synonyms: Demonic Possession, Spirit Possession, Possession, Spirit, Demonic Possessions, Demon Possession, Possessions, Demon, Possession, Demonic, Possessions, Spirit, Possession, Demon, Spirit Possessions, Demon Possessions, Possessions, Demonic