This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Symptoms and signs in psychiatry and classification, Subject name: Psychiatry
[{'content': 'What is a hypnopompic hallucination \nSelect and explain. \nA. If experienced while falling asleep, B. If experienced while awakening, C. After head trauma, D. After convulsion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Enquire whether the hallucinations occurred during wakefulness, or were they hypnagogic (occurring while going to sleep) and/or hypnopompic (occurring while getting up from sleep) hallucinations. this is a type of hallucination that presents in NARCOLEPSY , the major cause of narcolepsy is HYPOCRETIN DEFICIENCY a type of sleep disorder where there is hypnogogic hallucinations hypnopompic hallucinations sleep paralysis hypersomnia cataplexy( sudden loss of muscle tone due to emotional stimulus) Ref: a sho textbook of psychiatry, Niraj Ahuja,7th edition, pg no.13', 'role': 'assistant'}]