Demonic Possession dream meaning is explained below using 1 different source. Each interpretation is shown with its source.

Interpretation 1 — Dr. Mıchael Lennox

The idea of being possessed by something outside of your human self is connected to relinquishing responsibility for certain feelings that are deemed unacceptable. This is a fairly common dream image and represents a sudden outburst of any number of pent-up, dark emotions, such as guilt or rage. At the heart of this symbol, however, is the concept of not feeling responsible for the behavior in question or the intensity of the feelings being expressed. As the saying goes, “The devil made me do it.” Such a dream is asking you to look at where you are either blaming someone else for your own overwhelming feelings or are unwilling to take responsibility for your own reactivity.
Source: Complete Dictionary of Dreams Author: Dr. Mıchael Lennox