Hypnophobia

Hypnophobia, also termed clinophobia or somniphobia, is the often irrational and excessive fear of sleep. It may result from a feeling of control loss, or from repeating nightmares or anxiety over the loss of time that could be spent accomplishing tasks or maximizing leisure time instead of sleeping. The prefix hypno- originates from the Greek word ύπνος hypnos, which means sleep.