This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Perceptual misinterpretation of a real object is known as: \nSelect and explain. \nA. Illusion, B. Delusion, C. Hallucination, D. Schizophrenia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Illusion refers to a false interpretation of a sensory stimulus. Illusion can occur in delirium, which might be visual, auditory, gustatory, tactile, kinesthetic or visceral. Illusions may also occur in hysteria, depression, and schizophrenia. Hallucination is a false perception that occurs in the waking state in the absence of a sensory stimulus. Hallucinations can be auditory, visual, olfactory or gustatory, tactile, or somatic. Hallucination can occur secondary to tumors of the olfactory or basal temporal regions, toxins, fever, cerebro-vascular disease, central degenerative disorders and schizophrenia. Ref: Nurcombe B., Ebe M.H. (2008). Chapter 4. The Psychiatric Interview.', 'role': 'assistant'}]