I am a little confused as to what constitutes a hallucination vs. a illusion. Here is what I experience with alarming frequency. Husband will be driving the car with myself as a passenger. I look and a tree, pole, lamp post, etc. will morph into a very detailed demon. It is frightening to say the least. Does anyone else experience this? I really need to know if I'm alone in this experience and if I need to be telling my pdoc .