Dream of people disappearing without warning

Okay sometimes I have dreams of people just disappearing without warning if I turn by back to them or if I leave the room for a few seconds. For example, I once had a dream I was hanging with two other people in their dorm room. I went to use their restroom real quick and when I came back out, they were gone. A dream like this is very similar to the one about darkness, since it usually leads to darkness as well and is dangerous. I left the room, all the lights were one which was good, so I went to my room with plans on getting my stuff then leaving the building only to find out my room lights would not turn on. So I decided to just forget it and run for the exit but when I ran back into the hall, the hall lights were out as well. Dreams like this make me feel lonely, anxious, and even a bit abandoned. Not sure exactly what this dream could be interpreted as.

I'm not sure, 15LRC. I've had similar ones, such as thinking I've woken up before dawn and the lights won't work, then I realize the building is empty. I go outside and there's no-one around at all. Then I dream of waking up again, and repeat the whole dream. In my dreams there's more of a feeling of isolation, confusion and threat.

Exactly, hate those kinds of dreams.