Symptoms of Non-24
People with Non-24 often experience a mix of these symptoms, which can feel like living in a constant state of exhaustion.
A constantly shifting sleep schedule
Your internal clock drifts later each day, making it impossible to maintain a regular bedtime or wake-up time. This daily delay creates a cycle of irregular sleep patterns that can be difficult to reset.
Difficulty falling asleep or waking up at consistent times
You may find yourself wide awake when you want to sleep or groggy when you need to be alert. This inconsistency disrupts your daily routine and makes planning social or work activities challenging.
A constantly shifting sleep schedule
Your internal clock drifts later each day, making it impossible to maintain a regular bedtime or wake-up time. This daily delay creates a cycle of irregular sleep patterns that can be difficult to reset.
Difficulty falling asleep or waking up at consistent times
You may find yourself wide awake when you want to sleep or groggy when you need to be alert. This inconsistency disrupts your daily routine and makes planning social or work activities challenging.
A constantly shifting sleep schedule
Your internal clock drifts later each day, making it impossible to maintain a regular bedtime or wake-up time. This daily delay creates a cycle of irregular sleep patterns that can be difficult to reset.
Causes of Non-24
The primary risk factors include:
Total blindness
Most individuals who are completely blind develop Non-24 because their internal clock cannot rely on light cues to regulate sleep-wake cycles.
Neurological and genetic factors
Some sighted individuals may also develop Non-24 due to brain disorders affecting sleep regulation or genetic predisposition.
Lifestyle and environmental factors
Irregular sleep habits, shift work, or lack of natural light exposure may contribute to circadian rhythm disruptions.
2.5×
Sighted patient disparity
Among sighted patients, men are more than 2.5× more likely to experience Non-24 than women.
Who is Typically Affected?
Non-24 is most commonly found in:
Blind individuals
Over 50% of completely blind people are estimated to have Non-24 due to the lack of light perception.
Blind individuals
Over 50% of completely blind people are estimated to have Non-24 due to the lack of light perception.
Understanding the Impact of Non-24
Left untreated, Non-24 can severely impact an individual's daily life, making it difficult to maintain employment, relationships, and overall well-being.
Diagnosis & Management
Specialized sleep studies and actigraphy tracking can confirm a Non-24 diagnosis. From there, targeted light therapy, melatonin timing, melatonin receptor agonists, and structured routines help realign your internal clock with the 24-hour day.
Next Steps
Talk to a healthcare provider about screening for Non-24. Early diagnosis opens the door to personalized treatment plans that can restore consistent, restorative sleep — and a more predictable daily rhythm.
Take Control of Your Circadian Health
Our clinical screening tools help evaluate your sleep pattern and prepare a direct diagnostic sheet to review with your specialist.
