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: -In addition to nightmares and insomnia, other sleep disorders and disruptive nocturnal behaviors are prevalent among trauma-exposed individuals, including persons with PTSD. Sleep disordered breathing, periodic leg movement disorders, and other parasomnias are common in trauma-exposed samples.

Detailed explanation-3: -Subjective reports of sleep disturbance indicate that 70-91% of patients with post-traumatic stress disorder (PTSD) have difficulty falling or staying asleep. Nightmares are reported by 19-71% of patients, depending on the severity of their PTSD and their exposure to physical aggression.

Detailed explanation-4: -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.