Teens don't always get the sleep they desperately need. Distressed Teenage Girl Laying in Bed. Teen symptoms of insomnia and sleep deprivation: Complain about inability to go to sleep, stay asleep or waking too early in the morning. Does your teen have trouble falling asleep at night? Is he or So during an average night's sleep, a person will experience about four or five cycles of sleep. Stages 1 . Sleep deprivation (getting too little sleep) also can lead to nightmares.