<prompt> Modafinil is used as an adjunct in the treatment of?Sleep apnea syndromeNarcolepsyADHDShift work disorder  <response>: ANSWER: A Sleep apnea syndrome REF: Harrisons 18th ed ch: 27FDA approved indications of modahnil:Drug of choice: Narcolepsy and shift work disorderAdjunctive treatment of sleep apnea syndromeOff label uses where use is doubtfulADHDDepressionBipolar disorderFatigueDepersonalisation disorderCognitive enhancement 