Sleep paralysis

A disorder characterized by episodes in which a person is unable to move, which can occur while falling asleep or upon waking up in the middle of the night. Muscle tone inhibition during REM sleep is maintained even after waking up. Consciousness and memory are preserved, and breathing is not affected. Episodes last seconds or minutes, but are often intense and, when frequent, may affect sleep quality.

Sleep paralysis in isolation is more common in post-traumatic stress and anxiety disorders. However, it can also be caused by conditions that lead to excessive daytime sleepiness and/or sudden falls. In many cases, treatment is either not required or simply involves better sleep hygiene measures to prevent deprivation and improve quality of sleep. If combined with other symptoms, it is important to see a Sleep Doctor for further clarifications and to determine the best treatment.