Some people describe stretches of time when they feel unusually confident, energetic, and productive, needing little sleep and full of ideas. It can feel good, even like a break from depression. But when those periods are a clear change from your usual self and last several days, they may be hypomania. Recognizing hypomania symptoms is important because it can change the diagnosis from depression to bipolar disorder, and that changes treatment. This guide explains the signs, how hypomania differs from mania, and when to get help.
What Is Hypomania?
Hypomania is a distinct period of at least four consecutive days of abnormally elevated, expansive, or irritable mood and increased energy or activity, present most of the day, that’s noticeable to others but not severe enough to cause marked impairment or require hospitalization. It’s the defining feature of bipolar II disorder when combined with major depressive episodes.
Bipolar disorder is common and serious. According to the National Institute of Mental Health, an estimated 2.8% of U.S. adults had bipolar disorder in the past year, and 82.9% of them had serious impairment.
Share of U.S. adults with past-year bipolar disorder who had serious impairment.
Signs of Hypomania
Signs of hypomania include elevated or irritable mood with at least three of the following: inflated self-esteem, decreased need for sleep, being more talkative, racing thoughts, distractibility, increased goal-directed activity or restlessness, and risky behavior such as spending sprees or impulsive decisions.
- Decreased need for sleep: feeling rested after only a few hours.
- Racing thoughts: ideas jumping quickly from one to another.
- More talkative: speaking faster or more than usual.
- Increased activity: starting many projects at once.
- Risk-taking: spending, driving, or decisions that are out of character.
Hypomania can feel like finally being your best self. That's exactly why it's so easy to miss, and why it matters.
Hypomania vs Mania
The difference between hypomania vs mania is severity and duration: hypomania lasts at least four days and causes a noticeable change without marked impairment, while mania lasts at least a week, or any duration if hospitalization is needed, and causes serious impairment, sometimes with psychosis. Mania defines bipolar I disorder; hypomania with depression defines bipolar II.
| Hypomania | Mania | |
|---|---|---|
| Minimum duration | 4 days | 7 days, or any length if hospitalized |
| Impairment | Noticeable change, not marked impairment | Marked impairment |
| Psychosis | No | Can occur |
| Associated diagnosis | Bipolar II (with depression) | Bipolar I |
Our guide to the types of bipolar disorder explains bipolar I, bipolar II, and cyclothymia in more detail.
Wondering about your highs?
A careful mood evaluation can help. By telehealth across South Carolina and New York.
Why Hypomania Is Often Missed and Bipolar II Is Misdiagnosed
Hypomania is often missed because it can feel pleasant or productive, people rarely seek help during it, and clinicians may only ask about low moods. As a result, bipolar II is frequently diagnosed as depression. People with bipolar II usually seek care when depressed, and depression is very common: NIMH reports that 8.3% of U.S. adults had a major depressive episode in 2021.
This matters because antidepressants alone may not be the best approach for bipolar depression and, in some people, may trigger hypomania. Our guide to bipolar II vs depression explains why getting the diagnosis right changes treatment.
Share of U.S. adults with at least one major depressive episode, by age.
Decreased Need for Sleep: An Important Clue
Decreased need for sleep is one of the most important clues to hypomania, because it’s different from insomnia: people with hypomania sleep less but don’t feel tired, while people with insomnia want to sleep and feel exhausted. Tracking sleep and energy can help you and your psychiatrist spot patterns.
- Track sleep. Record hours slept and how rested you feel each day.
- Rate energy and mood. Use a simple daily scale for mood and energy.
- Note behavior changes. Write down spending, projects, or risk-taking that feels unusual.
- Ask for input. Invite a family member or partner to share what they notice.
- Share with your psychiatrist. Bring your records to your evaluation.
Treatment for bipolar II usually includes mood stabilizers or certain other medications, along with therapy and regular sleep routines. A review of lamotrigine found it delayed new mood episodes in long-term bipolar trials. Our guides to lithium and sleep problems cover related topics.
Highs that feel like progress
Bursts of energy, little sleep, and big plans, followed by crashes into depression.
An evaluation that asks about highs
A careful history of both moods, with input from people who know you.
Stability instead of swings
An accurate diagnosis and treatment that steadies both highs and lows.
Dr. Gabriella Farkas, MD PhD
Board-certified adult psychiatrist with a PhD in neuroscience. Dr. Farkas asks about highs as well as lows, because an accurate mood diagnosis changes treatment.
About Dr. Farkas →When to Get Help
Get help if you notice periods of unusually high energy, little need for sleep, racing thoughts, or impulsive behavior that are different from your usual self, especially if you’ve also had depression. Family members’ observations are valuable, so consider bringing someone to your evaluation.
A comprehensive adult psychiatric evaluation that asks about both highs and lows is the best way to get an accurate diagnosis. Our overview of mood disorders explains the full range. If you’re having thoughts of suicide, call or text 988 in the US.
Key Terms
- Hypomania
- At least four days of elevated or irritable mood and increased energy without marked impairment.
- Mania
- At least a week of elevated or irritable mood and energy with marked impairment, sometimes psychosis.
- Bipolar II disorder
- A mood disorder with hypomanic and major depressive episodes, without full mania.
- Decreased need for sleep
- Sleeping much less without feeling tired, a key sign of hypomania or mania.
Common Questions About Hypomania
What are hypomania symptoms?
Hypomania symptoms include at least four days of elevated or irritable mood and increased energy, plus signs such as decreased need for sleep, racing thoughts, talkativeness, inflated confidence, distractibility, and risky behavior. It's a noticeable change. It's not as severe as mania. It can point to bipolar II. An evaluation can clarify it.
What is the difference between hypomania and mania?
Hypomania lasts at least four days and causes a noticeable change without marked impairment, while mania lasts at least a week or requires hospitalization and causes serious impairment, sometimes with psychosis. Mania defines bipolar I. Hypomania with depression defines bipolar II. Both need care. Treatment differs. Tracking mood and sleep helps.
Can hypomania feel good?
Yes, hypomania can feel good, with extra energy, confidence, and productivity, which is one reason it's often missed or not reported. It may be followed by depression. Impulsive decisions can cause problems. Family often notices first. It's worth mentioning to your psychiatrist. Tracking mood and sleep helps. Family input is valuable.
Is hypomania the same as bipolar disorder?
Hypomania is a symptom episode, not a diagnosis on its own; when it occurs with major depressive episodes, it indicates bipolar II disorder. Frequent milder mood swings may indicate cyclothymia. Substances and medications can also cause it. An evaluation is needed. Diagnosis guides treatment. Tracking mood and sleep helps. Family input is valuable.
Can antidepressants cause hypomania?
Antidepressants can trigger hypomania in some people with bipolar disorder, which is why an accurate diagnosis matters before starting treatment for depression. Your psychiatrist will ask about past highs. Mood stabilizers may be considered. Report any unusual energy. Changes are made carefully. Tracking mood and sleep helps. Family input is valuable.
How is decreased need for sleep different from insomnia?
With decreased need for sleep, people sleep much less but don't feel tired, while insomnia involves wanting to sleep but being unable to and feeling exhausted. The distinction is important. It can signal hypomania. Tracking sleep helps. Tell your psychiatrist what you notice. Tracking mood and sleep helps. Family input is valuable.
Can I get evaluated for hypomania by telehealth?
Yes, Dr. Farkas evaluates mood disorders, including hypomania and bipolar II, by secure telehealth for adults in South Carolina and New York. You'll need a private space. A device with a camera works well. A family member can join with permission. Follow-ups use the same platform. Tracking mood and sleep helps.
Your highs matter as much as your lows.
A careful mood evaluation.
Sources
- National Institute of Mental Health. “Bipolar Disorder.” NIMH Statistics, National Comorbidity Survey Replication data. https://www.nimh.nih.gov/health/statistics/bipolar-disorder
- National Institute of Mental Health. “Major Depression.” NIMH Statistics, 2021 NSDUH data. https://www.nimh.nih.gov/health/statistics/major-depression
- Goldsmith DR, et al. “Lamotrigine: a review of its use in bipolar disorder.” Drugs, 2003;63(19):2029–2050. https://pubmed.ncbi.nlm.nih.gov/12962521/
Educational content only. This article does not constitute medical advice and does not establish a doctor-patient relationship. If you are in crisis, call or text 988 (Suicide & Crisis Lifeline) or call 911. Treatment decisions should be made with a qualified clinician familiar with your circumstances. Last reviewed: September 2026.