Excessive daytime sleepiness (EDS) is not the same as feeling tired all the time. Instead, it’s a persistent urge to sleep during typical waking hours. EDS can be linked to a number of , Excessive daytime sleepiness (EDS) is characterized by persistent sleepiness and often a general lack of energy, even during the day after apparently adequate or even prolonged nighttime sleep. EDS can be considered as a broad condition encompassing several sleep disorders where increased sleep is a symptom, or as a symptom of another underlying disorder like narcolepsy, circadian rhythm sleep , Excessive daytime sleepiness (EDS) is a condition in which people feel very sleepy in circumstances where they should be alert. People with EDS may find themselves falling asleep unintentionally. Daytime sleepiness is considered excessive when it is so difficult to stay awake during the day that it interferes with normal functioning., Up to 25% of adults report experiencing excessive daytime sleepiness. Lack of sleep is the most common cause of EDS, but sometimes it is a sign of an underlying sleep disorder or medical condition., Excessive daytime sleepiness affects up to 25% Trusted Source UpToDate More than 2 million healthcare providers around the world choose UpToDate to help make appropriate care decisions and drive better health outcomes. UpToDate delivers evidence-based clinical decision support that is clear, actionable, and rich with real-world insights., Diagnosis and Management of Conditions That Cause Excessive Daytime Sleepiness. Below is a table from American Family Physician that describes the overall testing process for diagnosing the cause of Excessive Daytime Sleepiness. Treating Excessive Daytime Sleepiness. Treatment for EDS [21] depends on what is causing it. Treatment plans may be a .