Go online to PeerView.com/JKX860 to view the activity, download slides and practice aids, and complete the post-test to earn credit. An expert in hypersomnolence discusses the diagnosis, classification, and treatment of narcolepsy and idiopathic hypersomnia. Using real-life cases as examples, the latest data and guidelines are reviewed in juxtaposition with the patients’ stories. Upon completion of this activity, participants should be better able to: Describe how delayed diagnosis of narcolepsy or idiopathic hypersomnia (IH) exacerbates the multifaceted burdens associated with both conditions; Apply International Classification of Sleep Disorders criteria to assess patients who present with excessive daytime sleepiness (EDS) or other signs or symptoms suggesting narcolepsy or IH; and Individualize treatment of narcolepsy and IH, based on the latest clinical evidence and guidelines; patient needs, preferences, and comorbidities; and considerations that affect adherence.