What is a ghost?
A normal person if he drinks everyday, but suddenly if you find him drinking a lot more than he does normally, it might be a case of possession by a ghost. It might also be that a person doesn't drink at all but after being possessed by a ghost may start drinking a lot as the ghost might be a drunkard and it tends the person to drink. But not all ghosts have lust for drink. A dead spirit always try to acquire a body as it gives all the comforts when living in a physical body which is not there after getting out of the body after the death. But a ghost cannot just possess anyone. People who are immoral and doesn't respect their chastity usually get possessed. If you are possessed by a ghost the major symptoms would be that you loose all the control over your body and the ghost inside you mostly control your body. You may jump, cry, weep, scream, shiver and mostly you are completely lost. Demons are evil spirits and ghosts are one of them. So a ghost is a demon and part of it. Even in bible its said you can get possessed by demons (source:compellingtruth.org)
Please note: the information presented here is based on few lectures of Shri Mataji (founder of Sahaja Yoga and a spiritual guru). One of her lectures being here www.sahajayoga.net.au/question-when-you-depart-from-this-body-where-does-the-spirit-where-do-the-energy-stay/ based on possession by dead spirits.
Written By: Rajesh Bihani, New Delhi, India
Edited by: Rajesh Bihani ( Find me on Google+ )