The Four Types of Bipolar Disorder
Bipolar disorder is a mental health condition that causes noticeable shifts in mood, energy, activity level, sleep, and functioning. The four commonly discussed types are Bipolar I Disorder, Bipolar II Disorder, Cyclothymic Disorder, and Other Specified or Unspecified Bipolar and Related Disorders.
Understanding the type of bipolar disorder matters because treatment needs can vary. Some people experience severe manic episodes, some experience hypomania and depression, and some have ongoing mood instability that does not fit neatly into one category.
Updated: April 26, 2026
Quick Answer: What Are the Four Types of Bipolar Disorder?
The four types of bipolar disorder are Bipolar I Disorder, Bipolar II Disorder, Cyclothymic Disorder, and Other Specified or Unspecified Bipolar and Related Disorders. All involve mood changes, but they differ in severity, duration, and whether a person experiences mania, hypomania, depression, or symptoms that do not fully match the other categories.
Simple way to remember it: Bipolar I involves full mania. Bipolar II involves hypomania and depression. Cyclothymic disorder involves ongoing mood ups and downs that are less severe but persistent. Other specified or unspecified bipolar disorders involve bipolar-like symptoms that do not fully meet the criteria for the first three categories.
What Is Bipolar Disorder?
Bipolar disorder is more than ordinary moodiness. It involves clear changes in mood, energy, sleep, behavior, concentration, and ability to function. These mood episodes can include mania, hypomania, depression, or mixed features where symptoms of elevated and depressed mood happen together.
A person with bipolar disorder may have periods where they feel unusually energized, impulsive, irritable, confident, restless, or unable to sleep. They may also have periods of deep depression, low motivation, hopelessness, fatigue, isolation, or difficulty completing daily responsibilities.
Safety note: If someone is at risk of harming themselves or others, experiencing psychosis, unable to sleep for days, acting dangerously impulsive, or in immediate crisis, call 911 or go to the nearest emergency room. A blog cannot diagnose bipolar disorder or replace emergency care.
The Four Types of Bipolar Disorder
1. Bipolar I Disorder
Bipolar I Disorder is defined by at least one manic episode. Mania is more severe than hypomania and may involve dangerous impulsivity, very little sleep, racing thoughts, intense irritability or euphoria, psychosis, or hospitalization.
- At least one manic episode
- Depressive episodes may also occur
- Symptoms can seriously disrupt work, relationships, safety, or daily functioning
- May require a higher level of care during severe episodes
2. Bipolar II Disorder
Bipolar II Disorder involves episodes of depression and hypomania, but not full mania. Hypomania can look like increased energy, confidence, productivity, talkativeness, or impulsivity, but it is less severe than mania.
- Hypomanic episodes
- Major depressive episodes
- No history of full manic episodes
- Can still be very serious, especially when depression is severe or persistent
3. Cyclothymic Disorder
Cyclothymic Disorder, also called cyclothymia, involves recurring hypomanic and depressive symptoms that are not severe enough or long enough to qualify as full hypomanic or major depressive episodes.
- Chronic mood instability
- Periods of elevated and low mood
- Symptoms may feel “milder” but can still interfere with life
- Often requires consistent support and mood regulation strategies
4. Other Specified or Unspecified Bipolar Disorder
This category is used when a person has bipolar-related symptoms but does not fully meet the criteria for Bipolar I, Bipolar II, or Cyclothymic Disorder. Symptoms may still be distressing and may still require treatment.
- Bipolar-like symptoms are present
- Symptoms do not fully match another bipolar diagnosis
- Clinical assessment is important
- Substance use, trauma, anxiety, depression, or medication effects may need to be considered
Bipolar Disorder Types Compared
The main difference between bipolar disorder types is the pattern and severity of mood episodes. The table below gives a simple overview.
| Type | Main Pattern | Mania? | Depression? | Why It Matters |
|---|---|---|---|---|
| Bipolar I | At least one full manic episode | Yes | Often, but not always | Mania can create serious safety, financial, legal, relationship, or hospitalization risks. |
| Bipolar II | Hypomania plus major depression | No full mania | Yes | Depression can be severe, even when elevated episodes seem less obvious. |
| Cyclothymic Disorder | Ongoing mood ups and downs | No full mania | Symptoms may not meet full major depression criteria | Chronic mood instability can still affect relationships, work, sleep, and recovery. |
| Other Specified / Unspecified | Bipolar-related symptoms that do not fit neatly into other types | May vary | May vary | A full assessment helps clarify what is driving symptoms and what treatment is safest. |
Signs Bipolar Disorder May Be Affecting Daily Life
Bipolar symptoms can look different from person to person. Some people mainly notice depression. Others notice sleep changes, impulsivity, anger, racing thoughts, or periods of feeling unusually driven or energized.
Bipolar Disorder and Addiction: Why Dual Diagnosis Care Matters
Bipolar disorder and substance use can overlap in complicated ways. Alcohol or drugs may temporarily seem to calm racing thoughts, numb depression, or help someone sleep, but substance use can also worsen mood instability, increase impulsivity, interfere with medications, and make diagnosis harder.
When bipolar symptoms and substance use are both present, the safest path is usually integrated dual diagnosis care. That means the treatment plan looks at mental health, substance use, sleep, trauma, medications, coping skills, family stress, and relapse risk together instead of treating each issue in isolation.
Alpine Insight: Families often notice the crisis first: sleep changes, sudden impulsive behavior, depression, anger, relapse, or a pattern of “doing better for a while” and then destabilizing again. A careful assessment helps separate what may be bipolar symptoms, what may be substance-related, and what level of support is safest.
What Not to Do If You Think Bipolar Disorder Is Involved
If bipolar disorder may be part of the picture, the goal is not to shame, argue, or force a label. The goal is to reduce risk and get the right evaluation.
- Do not diagnose someone during an argument. Focus on safety, symptoms, and next steps.
- Do not ignore severe sleep loss. Going days with little or no sleep can be a serious warning sign.
- Do not assume substance use is the only problem. Mood symptoms and substance use can feed each other.
- Do not stop psychiatric medication without medical guidance. Medication changes should be handled by a qualified prescriber.
- Do not wait if there is danger. Psychosis, suicidal thoughts, unsafe behavior, or inability to function may require urgent care.
How Treatment Can Help
Bipolar disorder is treatable, but it usually requires consistent support. Treatment may include psychiatric care, medication management, therapy, relapse prevention, sleep stabilization, family support, and skills for managing emotions and impulsive urges.
When Mental Health Treatment May Help
- Mood episodes are disrupting daily life
- Depression keeps returning
- Sleep, anger, energy, or impulsivity feels hard to control
- Family members are worried about safety or stability
When Dual Diagnosis Treatment May Help
- Alcohol or drugs are being used to cope with mood symptoms
- Relapse happens during depression, stress, or high-energy periods
- Substance use makes symptoms harder to understand
- The person needs support for both mental health and addiction recovery
What Should I Do Next?
The next step depends on safety, symptoms, substance use, and how much support the person needs right now.
If You Are Unsure
Start with a private conversation with admissions. You can explain what is happening, ask questions, and get guidance without pressure.
Talk to AdmissionsIf You Are Ready for Help
Verify insurance and ask what level of care may fit: detox, residential treatment, PHP, IOP, mental health treatment, or dual diagnosis care.
Verify InsuranceIf It Feels Urgent
If there is immediate danger, psychosis, suicidal thinking, or unsafe behavior, call 911 or go to the nearest emergency room first.
Call AlpineWhat Happens After You Reach Out to Alpine?
Reaching out does not mean you are committing to treatment. It simply gives you a clearer next step.
- You explain what is going on. This may include mood symptoms, substance use, safety concerns, medications, insurance, and timing.
- Admissions helps identify the safest next step. If Alpine is not the right fit, the team can still help point you in a safer direction.
- Insurance can be verified quickly. You can learn what benefits may apply before making a treatment decision.
- You receive guidance on level of care. This may include detox, residential treatment, PHP, IOP, mental health treatment, or dual diagnosis support.
Printable Bipolar Disorder Type Checklist
Use this quick checklist to organize what you are noticing before speaking with a professional. This is not a diagnosis. It is a conversation guide.
- Have there been periods of unusually high energy, little sleep, or risky behavior?
- Have there been periods of depression, hopelessness, or isolation?
- Are mood shifts affecting work, school, relationships, or safety?
- Is alcohol or drug use involved?
- Are symptoms getting worse, more frequent, or harder to manage?
- Has there been psychosis, suicidal thinking, or dangerous impulsivity?
Helpful Related Alpine Pages
If bipolar symptoms, addiction, trauma, depression, or anxiety are affecting daily life, these Alpine Recovery Lodge resources may help you understand your next step.
Trusted External Resources
These resources can help you learn more about bipolar disorder and co-occurring mental health and substance use concerns.
Frequently Asked Questions About the Types of Bipolar Disorder
What are the four types of bipolar disorder?
The four commonly discussed types are Bipolar I Disorder, Bipolar II Disorder, Cyclothymic Disorder, and Other Specified or Unspecified Bipolar and Related Disorders.
What is the difference between Bipolar I and Bipolar II?
Bipolar I involves at least one full manic episode. Bipolar II involves hypomanic episodes and major depressive episodes, but not full mania.
Is Bipolar II less serious than Bipolar I?
Not necessarily. Bipolar II does not include full mania, but depressive episodes can be severe, long-lasting, and disruptive. Both types deserve proper assessment and treatment.
What is cyclothymic disorder?
Cyclothymic disorder involves ongoing mood ups and downs with hypomanic and depressive symptoms that are not severe enough or long enough to meet full criteria for hypomanic or major depressive episodes.
Can bipolar disorder be confused with addiction?
Yes. Substance use can mimic, worsen, or hide mood symptoms. Bipolar disorder and addiction can also occur together, which is why integrated dual diagnosis assessment can be important.
Can Alpine Recovery Lodge help with bipolar disorder and substance use?
Alpine Recovery Lodge provides mental health and dual diagnosis treatment support for people dealing with mental health symptoms and substance use concerns. Admissions can help determine whether Alpine is an appropriate fit.
When should bipolar symptoms be treated as urgent?
Seek immediate help if there is suicidal thinking, psychosis, dangerous impulsivity, inability to sleep for days, threats of harm, or behavior that creates immediate safety concerns.
What is the first step if I think someone needs help?
If there is no immediate emergency, the first step is to speak with a qualified professional or treatment admissions team, describe the symptoms, and ask what level of care may be safest.
Alpine Recovery Lodge Can Help You Find the Next Step
If bipolar symptoms, depression, anxiety, trauma, or substance use are making life feel unstable, you do not have to figure it out alone. Alpine Recovery Lodge can help you understand treatment options, verify insurance, and decide whether mental health or dual diagnosis care is the right next step.
If Alpine is not the right fit, we will still do our best to guide you toward a safer option.
This page is for educational purposes only and is not a diagnosis or substitute for medical advice. For immediate danger or medical emergency, call 911 or go to the nearest emergency room.
