This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sleep-Wake Disorders, Subject name: Psychiatry
Modaflnil is used for the treatment of - 
Select and explain. 
A. Narcolepsy, B. Sexual dysfunction, C. Depression, D. Anxiety
A: Narcolepsy
Answer: A: Narcolepsy 
Explanation: Ans. is 'a' i.e. Narcolepsy o Modafinil is a wakefulness-promoting agent (or eugeroic) used for treatment of disorders such asnarcolepsy, shift work sleep disorder, and excessive daytime sleepiness associated with obstructive sleep apneao It acts as a selective, relatively weak, atypical dopamine reuptake inhibitor.o Important side effects are headache (MC), nausea, nervousness, diarrhea, insomnia, anxiety, dizziness, and gastrointestinal problems. Rarely drug reaction related side effects like SJS, TEN etc have been noted.