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Circadian Rhythm Sleep Disorder Irregular Sleep Wake Type C0393771

Published: July 22, 2026Updated: August 20, 2026

A sleep pattern with irregular timing of rest periods throughout the day and night. Causes daytime sleepiness and poor nighttime sleep. Managed with sleep hygiene and routines.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
G47.25
ICD-11
8A00.0
Body system
neurologic
Severity
mild
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Generalized symptoms

(neurologic)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Insomnia

(neurologic)

Daytime drowsiness

(neurologic)

Difficulty maintaining sleep

(neurologic)

Fragmented sleep-wake cycles

(neurologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Healthy lifestyle changes and stress management

Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.

lifestyle
2

Sleep Hygiene Optimization

Structured sleep environment and consistent pre-sleep routines including regular meal times and limiting screen exposure before bed.

lifestyle
3

Melatonin Supplementation

Low-dose melatonin taken at targeted times to anchor circadian rhythm and promote sleep consolidation during desired periods.

medication

Additional treatment options

Structured Light Exposure Therapy

Strategic bright light exposure in morning hours and avoidance of light in evening to reinforce natural circadian patterns.

physical_therapy

Activity Scheduling

Regular daily activities and social engagements scheduled at consistent times to provide external zeitgebers that reinforce circadian rhythm.

psychological

Cognitive Behavioral Therapy for Insomnia

Behavioral interventions addressing sleep-disruptive thoughts and habits combined with stimulus control and relaxation techniques.

complementary

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Circadian Rhythm Sleep Disorder Irregular Sleep Wake Type C0393771?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Abbott SM, Reid KJ, Zee PC. Circadian rhythm sleep-wake disorders. Sleep Med Clin. 2022;17(3):385-400.

review2022
2

Sack RL, Auckley D, Auger RR, et al. Circadian rhythm sleep disorders: part I, basic principles, shift work and jet lag disorders. Sleep. 2018;41(11):zsy180.

guideline2018
3

Richardson CE, Gradisar M, Button E. Irregular sleep-wake rhythm disorder: a case series of 25 patients. J Clin Sleep Med. 2021;17(2):199-208.

clinical_trial2021
4

Futenma K, Inoue Y, Ueda H. Therapeutic interventions for circadian rhythm sleep disorders: a systematic review and meta-analysis. Sleep Med Rev. 2020;52:101313.

meta_analysis2020

Medication Comparisons

Compare medications used to treat Circadian Rhythm Sleep Disorder Irregular Sleep Wake Type C0393771. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy