Hallucination 
To dream about a hallucination represents something rising up from your subconscious. This can also suggest that you have feelings that you are reluctant to deal with directly. This dream could be an indication that you need to pay more attention in general and to speak clearly about how you feel. On the contrary, this dream also indicates deception of the self. What are you trying to suppress?
Deja Vu
To dream of experiencing deja vu may be your unconscious registering the energy of a previous lifetime. Alternatively, try to remember as much of your dream as possible. There could be hidden life-changing and extremely significant information.
Fantasy
To dream of a fantasy world suggests a strong desire to get away from your current reality. To be participating in personal fantasy indicates a need to make an important decision in your waking life that may lead to a long held vision becoming a fulfilling reality.
Apparition
To see an apparition in your dream symbolizes your inner essence and personality. It may also represent your ethics and morals.
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