A newly identified sleep disorder known as hyperonirism, or โepic dreaming,โ causes people to experience prolonged, highly vivid, and often relentless dreams throughout the night โ leaving them exhausted and unrefreshed even after a full nightโs sleep.
Individuals with this condition describe spending entire nights immersed in detailed, realistic dream scenarios that can feel indistinguishable from waking life. These dreams are not limited to nightmares; they often involve mundane or emotionally charged situations that continue without interruption. Despite spending a typical amount of time in REM sleep, patients frequently wake up feeling mentally drained, cognitively foggy, and emotionally overwhelmed.
French researchers propose that the exhaustion stems primarily from frequent micro-awakenings during the night. These subtle disruptions increase dream recall and create the distressing sensation of having lived through an additional full day while asleep. Standard treatments for anxiety or depression usually fail to relieve the symptoms, leading the authors to argue that hyperonirism should be recognized as a distinct clinical sleep disorder.
[Geoffroy, P. A., Saadi, S., Mauries, S., Clerici, E., Lejoyeux, M., Maruani, J., & Bourgin, P. (2026). Dream tyranny: Hyperonirism diagnostic criteria. L'Encรฉphale. DOI: 10.1016/j.encep.2026.03.006]