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HomeConditionsDepression & Bipolar (Mood Disorders)Cyclothymic Disorder
Mental Health Condition

Cyclothymic Disorder

To define Cyclothymic Disorder: A chronic pattern of mood ups and downs that are milder than bipolar episodes but never fully stable.

Overview

Description

Cyclothymic Disorder is a chronic mood disorder characterized by numerous periods of hypomanic symptoms and periods of depressive symptoms that do not meet full criteria for a hypomanic, manic, or major depressive episode. Symptoms persist for at least 2 years in adults (1 year in children/adolescents) with no symptom-free period longer than 2 months.

Prevalence

Lifetime prevalence estimated at 0.4–1%, but often underrecognized or misdiagnosed as personality disorder or recurrent depression.

Age of Onset

Usually adolescence or early adulthood; insidious onset with chronic course.

DSM-5 Code

301.13

ICD-10 Code

F34.0

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

Real-Life Stories

Real-Life Stories

Common Reactions

Common Reactions

First-Person Voices

First-Person Voices

Full Examples

Full Examples

Comparisons

Comparisons

Frequently Asked Questions

Frequently Asked Questions

Symptoms

Symptoms

Treatment

Treatment

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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