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HomeConditionsSleep & InsomniaInsomnia Disorder
Mental Health Condition

Insomnia Disorder

To define Insomnia Disorder: Insomnia Disorder involves persistent difficulty falling asleep, staying asleep, or early awakening despite adequate sleep opportunity, causing daytime impairment.

Overview

Description

Insomnia Disorder is characterized by difficulty initiating or maintaining sleep, or waking up too early, accompanied by daytime impairment such as fatigue, mood disturbance, or cognitive dysfunction. Symptoms occur despite adequate opportunity for sleep and are not better explained by another sleep disorder, mental disorder, or medical condition.

Prevalence

Chronic insomnia disorder affects approximately 6–10% of adults, with higher rates among women, older adults, and individuals with comorbid medical or psychiatric conditions.

Age of Onset

Can occur at any age but more common in middle-aged and older adults.

DSM-5 Code

780.52

ICD-10 Code

F51.01

By HeyPsych Contributor
Reviewed by the HeyPsych Medical Review Board
Reviewed by the HeyPsych Medical Review Board
Board-certified psychiatrists and mental health professionals
Medical Review Board
Published: August 15, 2025
Last Updated: August 25, 2026
Last Reviewed: August 25, 2026

What It Is

What It Is

What It Looks Like

What It Looks Like

In Their Words

In Their Words

Signs & Symptoms

Signs & Symptoms

Risk Factors

Risk Factors

How It's Diagnosed

How It's Diagnosed

Similar Conditions

Similar Conditions

Treatment Options

Treatment Options

Common Questions

Common Questions

This information about mental health conditions is for educational purposes only. If you believe you may be experiencing symptoms of a mental health condition, please consult with a qualified healthcare professional for proper evaluation and diagnosis.

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Seeking Help for Insomnia Disorder?

If you recognize these symptoms in yourself or a loved one, know that help is available. Mental health conditions are treatable, and connecting with a qualified professional can make a significant difference.
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