a person can have depersonalization with or without having DID. Basically Dissociative disorders fall on a scale of one to ten the lowest being quick daydreaming typ[e situations that don't interfere with a person and their daily living and 10 being Dissociative Identity Disorder (DID) and all the disorders that have to do with separating the physical aspects from the mental aspects falls on that scale. I was told my ability of separating into seeming to be outside my body is called dissociating and that depersonalization is when a person gomentally numb so they cant feel a part of their body. this makes them feel like that body part doesn't belong to them. I do this all the time. I watch tv and during a comercial look down at my hand and sometimes becoause of my being so relazed I cant feel it. I know it is there and can move it but I cant feel it my mind does and optical illusion kind of thing making me think for a few seconds that it doesn't belong to me but then I get up and wash my hands and concentrate on how the soap feels and then Im back to normal again.