Delayed sleep phase disorder

src: www.epainassist.com Delayed sleep phase disorder ( DSPD ), more often known as delayed sleep phase syndrome and also as delayed sleep...

Sleep deprivation

src: fergusontalon.com Sleep deprivation is the condition of not having enough sleep; it can be either chronic or acute. A chronic sleep-re...

Sleep apnea

src: www.overindulgence.info Sleep apnea , also spelled sleep apnoea , is a sleep disorder characterized by pauses in breathing or periods o...