This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Forensic Psychiatry, Subject name: Forensic Medicine
False perception without any external stimulus is: 
Select and explain. 
A. Illusion, B. Hallucination, C. Delirium, D. Delusion
B: Hallucination
Answer: B: Hallucination 
Explanation: Ans. (B). HallucinationDisorder of thought- Delusion.Disorder of orientation, thought content - DeliriumFalse perception without stimulus - HallucinationFalse interpretation of existing stimulus - Illusion