Difference between Hallucination and Illusion *Hallucination* A sensory experience that occurs in the absence of any external stimulus. It's a perception that is not based on reality. *Illusion* A misperception or misinterpretation of a real external stimulus. It's a distorted perception of reality. Types of Hallucinations 1. Auditory Hallucination: Hearing voices or sounds that are not there, such as hearing someone's voice when no one is around. 2.Visual Hallucination: Seeing things that are n