Dream a little dream : Response By: Stauf

I’ve experienced this sort of thing as well. Though I don’t have a complete answer to your question, this: "but once I go back to sleep, or get up, it is completely forgotten until it returns the next night." reminded me of a theory that once occurred to me about my experience of it. That is, it seems to me it could be a form of dream deja vu. In other words, you could just be dreaming that you previously dreamt something instead of actually having previously dreamt it (I’m trying to make sense, really!). Though, it’s not exactly what I’m talking about, here’s a previous AskMe on dreams + deja vu (which may or may not be at all helpful). Sorry if this is kind of a derail or terribly off the mark.
Go to Source