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': 'Modafinil is approved by FDA for treatment of all except : \nSelect and explain. \nA. Obstructive sleep apnea syndrome (OSAS), B. Shift work syndrome (SWS), C. Narcolepsy, D. Lethargy in depression', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Modafinil (Provigil) :\n\nModafinil is an oral drug that is used for improving wakefulness in patients with excessive sleepiness.\nModafinil is used to promote wakefulness in patients with excessive sleepiness associated with :\n\n\nNarcolepsy.\nObstructive sleep apnea/hypopnea syndrome and\nShift work sleep disorder.\n\n\nThe exact mechanism of action of modafinil is not clear. It seems that modafinil increases the release of monoamines specifically the catecholamines (norepinephrine and dopamine) from the presynaptic terminals. However, modafinil also elevates hypothalamic histamine levels (in contrast to amphetamine-like stimulant which only releases catecholamines, but not histamine).', 'role': 'assistant'}]