Those with the disorder may have difficulty falling asleep or staying asleep, and may wake up groggy or feeling as if they need more rest. Although most people who are totally blind still can perceive light well enough to prevent non-24, there may be as many as 100,000 individuals in the United States with this condition, who can’t perceive enough light to establish a normal night sleep schedule.

Non-24 is a chronic circadian rhythm (body clock) disorder in the blind that causes problems with the timing of sleep.
People with non-24 may find their sleep patterns reversed -- needing to sleep during the day and to be awake at night.

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Comments Non 24 sleep disorder

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