Disordered sleep is one of the main symptoms of depression. Trouble going to bed and oversleeping are both disorders. Signs of insomnia include dark, under-eye circles and fatigue. Some anti-depressant medications like Trazodone work as sedatives to help induce sleep.
Recently, research by a team at the University of California, Berkeley, uncovered a link between sleep deprivation and psychiatric disorders. Previously, it was thought that psychiatric disorders caused sleep deprivation, and not the other way around, but it appears now that sleep deprivation may create symptoms that mimic psychiatric…