Difference Between Bipolar 2 and Cyclothymia

Difference Between Bipolar 2 and Cyclothymia

Difference Between Bipolar 2 and Cyclothymia: Bipolar 2 and Cyclothymia both trigger mood swings, although their intensity and duration vary. Bipolar 2 is defined by lesser highs (hypomania) and lows (depression) that last at least a few days, whereas Cyclothymia is typified by even milder ups and downs that may shift daily or even within the same day. Imagine Bipolar 2 to be an adventure with sharper slopes, whereas Cyclothymia is more parallel to a rough, twisting road. Both can cause disruption in everyday life, although Bipolar 2 is more disruptive because of its larger swings.

Difference Between Bipolar 2 and Cyclothymia

Bipolar II disorder and cyclothymia are both mental illnesses that involve variations in mood, energy, and activity levels, although they vary. Here are some differences between Bipolar II disorder and Cyclothymia.


Bipolar II Disorder


Severity of Episodes

More severe depressive and hypomanic episodes

Milder and more chronic mood fluctuations

Manic Episodes

Involves hypomanic episodes, no full manic episodes

No full manic or hypomanic episodes

Duration of Mood Episodes

Days to weeks

At least two years in adults, one year in adolescents

Frequency of Episodes

May occur less frequently compared to cyclothymia

More frequent mood fluctuations

Impairment Level

Significant impairment in social or occupational functioning

Less severe impairment than in bipolar II disorder

Diagnosis Criteria

Requires one hypomanic and one major depressive episode

Diagnosed based on numerous periods of hypomanic and depressive symptoms over two years

Onset Age

Typically begins in late adolescence or early adulthood

May have an earlier onset, often in adolescence

Risk of Suicide

Elevated risk during depressive episodes

Lower risk compared to bipolar II disorder

Medication Response

Usually responds well to mood stabilisers

Response to medication may be less consistent

Course of Illness

May progress to more severe forms of bipolar disorder

Can remain stable or evolve into more severe mood disorders

Browse Best Scrubs Collection

What is Bipolar 2?

This mood disorder involves cycling between hypomania (a milder manic state with elevated energy and increased activity) and depression, but the highs are less severe than in Bipolar 1. Symptoms can last for days or weeks, with periods of normal mood in between. It can significantly impact relationships, work, and daily life

Key Features of Bipolar 2:

  • Hypomanic Episodes: These are periods of elevated mood and energy, but not as severe as full-blown mania in Bipolar 1. Think of it like having a dial turned up a few notches. You might experience increased talkativeness, impulsivity, decreased need for sleep, and grandiosity. 
  • Major Depressive Episodes: These are periods of profound sadness, hopelessness, and low energy, similar to those experienced in Bipolar 1. You might struggle with daily tasks, lose interest in activities you once enjoyed, and have thoughts of suicide.
  • Less frequent mood swings: Bipolar 2 episodes typically last for days or weeks, with periods of normal mood in between. They are less frequent than the rapid cycling seen in some cases of Bipolar 1.
  • Significant impact on life: While less severe than Bipolar 1, Bipolar 2 can still significantly impact work, relationships, and overall well-being. Treatment with medication and therapy is crucial for managing symptoms and maintaining stability.

Causes of Bipolar 2:

  • Genetic factors: Family history of bipolar disorder increases the risk.
  • Brain chemistry: Imbalances in neurotransmitters like dopamine, serotonin, and norepinephrine might play a role.
  • Environmental triggers: Stressful life events, trauma, or substance abuse can trigger episodes.

Symptoms of Bipolar 2:

  • Hypomania: Periods of elevated mood, increased energy, and decreased need for sleep (but not as severe as mania in Bipolar I).
  • Depression: Episodes of sadness, low energy, loss of interest, and changes in sleep and appetite.
  • Rapid cycling: Frequent switches between hypomania and depression within a short period.

What is Cyclothymia?

Often described as a milder form of bipolar disorder, cyclothymia features frequent shifts between hypomania and mild depression, but the swings are less intense and occur over shorter periods, even within the same day. This "emotional roller coaster" can be disruptive but may not significantly interfere with daily functioning compared to Bipolar 1 or 2.

Key Features of Cyclothymia:

  • Chronic mood swings: People with Cyclothymia experience frequent ups and downs in mood, but not as intense as in Bipolar 2. They might have periods of hypomania and mild depression, alternating with periods of normal mood.
  • Symptoms don't meet full criteria for episodes: The hypomanic and depressive symptoms in Cyclothymia don't reach the severity or duration required for a diagnosis of Bipolar 2 or Bipolar 1. They're more like "mini" versions of those episodes.
  • Frequent mood changes: Mood shifts can happen quickly, even within the same day, and may be influenced by external factors like stress or fatigue.
  • Subtle but impactful: Cyclothymia can be challenging to diagnose as symptoms can be subtle and attributed to other factors. However, it can still impact relationships, work, and overall quality of life. Treatment with therapy and, in some cases, medication, can help manage mood swings and improve well-being.

Causes of Cyclothymia:

  • Similar to Bipolar II, the exact causes of Cyclothymia are unknown, but a combination of genetic and environmental factors is likely involved.
  • Neurochemical imbalances are also implicated in Cyclothymia.

Symptoms of Cyclothymia:

  • Hypomanic and depressive symptoms: Less intense and shorter in duration compared to Bipolar II.
  • Chronic fluctuations: Mood swings occur more frequently (at least two months a year) but are milder than hypomania and depression.
  • Emotional instability: Frequent changes in mood can impact relationships and daily functioning.

Shop Best Lab Coats from Here!

Similarities between Bipolar 2 and Cyclothymia 

  • Mood swings: Both illnesses include repeated mood swings between depressed and hypomanic states.
  • Chronicity: Both illnesses are chronic in nature, with symptoms lingering over a lengthy period of time.
  • Influence on Functioning: Both disorders can have a major influence on social, occupational, and daily functioning.
  • Treatment Options: Both illnesses are generally treated with a mix of psychotherapy and drugs, such as mood stabilisers.
  • Individuals with Bipolar II illness and Cyclothymia may suffer comparable stigma and misunderstandings regarding mood disorders.
  • Co-occurring illnesses: Both illnesses can co-occur with other mental health diseases, such as anxiety disorders or drug use disorders.
  • Genetic Factors: Both Bipolar II illness and Cyclothymia have a genetic component, with a higher risk in persons with a family history of mood disorders.

While both Bipolar 2 and Cyclothymia involve mood swings, their strength and pattern varies dramatically. Full-blown hypomanic episodes are interspersed with severe depressive episodes in Bipolar 2, each lasting weeks or even months and causing substantial disruption to everyday life. Cyclothymia, on the other hand, is characterised by milder hypomanic episodes and less severe depression symptoms that frequently shift within days or even hours. Although persistent, this rollercoaster ride seldom sends people into incapacitating lows or dangerously euphoric highs. Bipolar 2 packs a forceful punch with protracted extremes, but Cyclothymia is characterised by an endless flurry of smaller, more controllable swings.


What is Bipolar 2 disorder, and how does it differ from Cyclothymia?

Bipolar 2 disorder is characterised by depressive and hypomanic episodes, while Cyclothymia involves milder mood swings between hypomania and mild depression. The key difference lies in the severity and duration of mood episodes.

What are the common symptoms of Bipolar 2 and Cyclothymia?

Both disorders share symptoms such as mood swings, changes in energy levels, and altered sleep patterns. However, Bipolar 2 tends to involve more pronounced depressive episodes, while Cyclothymia features less severe mood swings.

How are the diagnostic criteria different for Bipolar 2 and Cyclothymia?

Bipolar 2 requires the presence of at least one hypomanic and one depressive episode, whereas Cyclothymia is diagnosed when numerous periods of hypomanic and depressive symptoms occur over a two-year period without meeting the criteria for a major depressive or manic episode.

Can the age of onset help the difference between Bipolar 2 and Cyclothymia?

Yes, typically Bipolar 2 disorder often manifests in late adolescence or early adulthood, while Cyclothymia may have an earlier onset in adolescence.

Are there any shared risk factors between Bipolar 2 and Cyclothymia?

Both disorders may have a genetic component, and environmental factors such as stress can contribute to their development. However, the specific risk factors may vary.

How do the treatment approaches differ for Bipolar 2 and Cyclothymia?

Treatment often involves mood stabilisers for Bipolar 2 and may include psychotherapy. Cyclothymia may be managed with psychotherapy and lifestyle changes, and medication may be used in severe cases.

What impact do these disorders have on daily functioning?

Both disorders can significantly impact daily life, affecting relationships, work, and overall quality of life. However, the extent of impairment may differ, with Bipolar 2 often causing more severe disruptions.

Other Article

 Knya - Vaccination Strategies for Different Age Groups

Vaccination Strategies for Different Age Groups...

Giridhar Kulkarni

People throughout their lives need different types of vaccines. There are different types of vaccines given to different age groups.  If you’re curious to learn what those vaccines are, then you’re...

Proper Guide on First Aid Skills

Basic First Aid Skills Everyone Should Know: A ...

Giridhar Kulkarni

Emergencies can occur anytime, anyplace. The first few moments of an emergency are very critical as they determine the life and death of a person.  So, whenever you’re in a...

Artificial Intelligence in Medicine: Enhancing Diagnostics and Treatment Decision-Making

Artificial Intelligence in Medicine: Enhancing ...

Giridhar Kulkarni

In medicine there can be risks of human errors, there can be risks of bad calculation of data, and there can be risks of wrong diagnosis given to the patient. ...

Knya Scrubs Uniforms

Nutrition and Aging: Addressing the Unique Need...

Giridhar Kulkarni

Nutrition for the elderly is very important. If you as a medical professional are dealing with elderly patients, then it’s time to learn about their nutritional needs.  Do you know...

Yoga for Doctors

The Benefits of Yoga for Doctors: Physical and ...

Abhijeet Kaji

Yoga has proven to be powerful for a lot of people worldwide. Yoga is a type of movement exercise that combines cardiovascular and strength exercises. You cannot ignore yoga for...

Alternative Medicine Doctors

Exploring Alternative Medicine: What You Need t...

Abhijeet Kaji

If you’re a medical professional, chances are you rarely know about alternative medicine. Many alternative medicine doctors are becoming famous for doing alternative therapies for their patients. As a medical...