AP PSYCHOLOGY

Detailed explanation-1: -Whether or not insomnia is diagnosed, people with PTSD often report less sleep due to problems falling asleep, being restless during the night and waking up earlier than wanted. Even brief periods of sleep loss can affect daily life.

Detailed explanation-2: -Sleep disturbances frequently co-occur with posttraumatic stress disorder (PTSD). Insomnia and nightmares are viewed as core symptoms of PTSD. Yet, relations between disturbed sleep and PTSD are far more complex: PTSD is linked to a broad range of sleep disorders and disturbed sleep markedly affects PTSD-outcome.

Detailed explanation-3: -PTSD seems to disrupt sleep by increasing the duration of light sleep; decreasing the duration of deep, restorative sleep; and interfering with rapid eye movement (REM) sleep, the stage of sleep linked to dreaming and nightmares. This often results in insomnia-difficulty falling and staying asleep-and daytime fatigue.