National Sleep Foundation

Chapter 6: Parasomnias

Consequences of Nightmares

Nightmares can increase Excessive Daytime Sleepiness, thereby impacting the person’s health. Nightmares can be symptoms of other conditions that require treatment — such as migraines, Post-Traumatic Stress Disorder (PTSD), or epilepsy — which impact the person’s health. Nightmares can increase depression and anxiety among those who are already experiencing depression and/or anxiety.