My Dream Interpretation

by myjellybean
To have a hallucination in your dream symbolizes repressed emotions and feelings that you do not want to confront. Your dream could be telling you to be more alert and to express yourself more clearly. Alternatively, it refers to self-deception. What are you trying to hide?

The Language of Dreams

by Patrica Telesco
(see Dreaming)

To dream of someone, or yourself, hallucinating indicates some misconception or misperception of reality. Whatever situations exist right now, everything is very unclear and uncertain, and caution is called for.

The Complete Guide to Interpreting Your Dreams

by Stearn Robinson - Tom Corbett
If your dream involved hallucinations, you can expect to be asked to help a friend who will not be entirely truthful regarding the nature of his or her difficulty.

Help if you can do so without getting personally involved.