Factors Associated with Duration Before Receiving Definitive Diagnosis of Narcolepsy among Japanese Patients Affected with the Disorder

Background Narcolepsy (NA) is a sleep disorder characterized by excessive daytime sleepiness and an increased propensity of rapid eye movement sleep. If left untreated, NA can lead to academic underachievement or job loss because of dozing off or mistakes caused by inattentiveness due to sleepiness.