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

Bipolar I Disorder

To define Bipolar I Disorder: A condition causing episodes of extreme elevated mood and energy alternating with periods of deep depression.

Overview

Description

Bipolar I Disorder is characterized by at least one lifetime manic episode, often with recurrent depressive and hypomanic episodes. Mania involves a distinct period of abnormally and persistently elevated, expansive, or irritable mood and increased energy/activity, causing marked impairment, need for hospitalization, or psychosis.

Prevalence

Lifetime ~1%; similar across sexes. High rates of underdiagnosis/misdiagnosis early in course.

Age of Onset

Late adolescence to early adulthood; can occur across lifespan.

DSM-5 Code

296.xx (specify current or most recent episode and features)

ICD-10 Code

F31.x

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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