Cyclothymia

Key Takeaways

• Classified in the DSM-5 as a bipolar-related disorder, cyclothymia features hypomanic and depressive symptoms that do not meet the full criteria for bipolar I or II.

• While bipolar episodes have a specific duration and intensity, cyclothymic disorder involves ongoing mood swings for at least two years in adults or one year in youth.

• Treatment typically involves medication and cognitive behavioral therapy tailored to address emotional regulation.

Understanding Cyclothymia

Cyclothymia is categorized as a form of bipolar disorder in the Diagnostic and Statistical Manual for Mental Disorders, Fifth Edition (DSM-5). While the symptoms of cyclothymia overlap with those of bipolar I (mania) and bipolar II (hypomania and depression), they do not meet the full diagnostic criteria of either type and are less intense in severity.^[1][2]

That being said, the symptoms of cyclothymia can still impair a person’s ability to function and meet the threshold for a mental health diagnosis. Like bipolar II, these manifestations include periods of elevated mood and energy (hypomanic symptoms) or a low mood (depressive symptoms). The disorder never results in a full-blown episode of mania (where a person loses touch with reality).^[1]

At times informally referred to as “Bipolar III,” cyclothymia is surrounded by uncertainty and controversy. Although classified as a standalone disorder in the DSM-5, the accuracy of the classification is inherently unclear as it shares diagnostic features with a variety of other disorders, particularly cluster B personality disorders.^[1][3]

Furthermore, cyclothymia often occurs alongside other mental health conditions - most frequently including anxiety, substance use, and co-occurring personality disorders. However, while cyclothymic disorder can exist at the same time as other mental health conditions, other conditions do not cause it.^[1][3]

Due to the overlap in diagnostic criteria between cyclothymia and other mental health conditions, as well as the fact that they frequently co-occur, the disorder is difficult to identify and often misdiagnosed. Unfortunately, despite its clinical relevance, cyclothymic mood instability remains understudied and is an evolving subject of research.^[1][3]

How Common is Cyclothymia?

Cyclothymia affects between 0.4% and 1% of people over the course of their lives, and it appears to affect men and women equally. However, in mental health clinics (where people are more likely to seek help for emotional challenges), the number of people exhibiting symptoms of cyclothymia is frequently reported to be much higher.^[1]

For example, some studies have found that as many as 5% of people in clinical settings appear to have symptoms of the disorder. This suggests that cyclothymia might be more common among those who seek treatment, despite it frequently going unrecognized or being mistaken for another mental health condition.^[1]

Cyclothymia vs Bipolar

Bipolar I is diagnosed when a person experiences at least one clear episode of mania, which is not a symptom of cyclothymia. During a manic episode, someone may experience euphoria, racing thoughts, decreased need for sleep, inflated self-esteem, or engage in impulsive or risky behavior. On the other hand, bipolar II overlaps with cyclothymic disorder in terms of hypomanic and depressive symptoms. However, unlike bipolar II, cyclothymia can cause sudden and short-lived shifts between feeling unusually upbeat and feeling low or down.^[1][2]

These mood changes are less intense than those seen in bipolar disorder, but they can still disrupt daily life and emotional stability. For example, a person with cyclothymia might feel unusually energetic and sociable in the morning, only to become withdrawn and pessimistic by the afternoon, without any clear external trigger.^[1][2]

While bipolar mood episodes are more clearly defined, with specific duration and intensity requirements (e.g., a specific mood episode lasting for at least 4 to 7 days), cyclothymic disorder is characterized by a continuous pattern of mood swings lasting at least two years in adults, or one year in children and adolescents.^[2]

During this period, symptoms of hypomania or depression are present more than half the time, with no symptom-free period lasting longer than two months. In contrast to bipolar I and II (which typically emerge after the age of 20), cyclothymic disorder tends to manifest in childhood or adolescence.^[2]

Additionally, bipolar disorders tend to cause severe dysfunction in daily life, including with work, relationships, and overall functioning. On the other hand, although cyclothymia can also impact daily life and cause distress, it usually does so to a lesser extent. ResearchersScientists are still exploring whether cyclothymia is a milder form of bipolar II or a separate disorder on the bipolar spectrum.^[2]

Symptoms of Cyclothymia

Cyclothymic disorder involves chronic mood instability marked by alternating periods of depression and hypomania. These symptoms can significantly impact behavioral and interpersonal patterns, and in some cases, lead to as well as less common somatic complaints.^[2]

Depressive Symptoms

• Low or depressed mood

• Irritability

• Hopelessness and helplessness

• Insomnia

• Fatigue or low energy

• Loss of interest or pleasure

• Lack of motivation

• Negative thoughts or feelings

• Headaches

• Nervous exhaustion

• Suicidal ideation

Hypomania Symptoms

• Impulsivity

• Inflated self-esteem or grandiosity

• Racing thoughts

• Increased sociability

• Excessive physical activity

• Talking more than usual or feeling a strong urge to keep speaking

Behavioral and Interpersonal Symptoms

• Frequent mood changes (whether depressive or hypomanic)

• Hypersensitivity to perceived rejection or criticism

• Repeated interpersonal conflicts

• History of self-harming behaviors

• Becoming dysregulated in response toOverreacting to minor stressors

• Risk-taking behaviors (e.g. excessive gambling, reckless sexual activity)

• Marital or relationship instability (multiple divorces)

• Legal or financial difficulties

• Repeated job loss

Physical Symptoms

• Chest pain

• General physical weakness or achiness

• Changes in eating habits

• Fatigue

• Changes in sleeping patterns

• Unexplained weight loss

• Hair loss

• Headaches or stomachaches

Causes of Cyclothymia

While the exact causes of bipolar disorders like cyclothymia are unknown, researchers believe that a combination of genetic vulnerability, imbalances in brain chemicals, and environmental influences are involved. Cyclothymic disorder is generally considered part of a group of mood disorders with similar underlying causes.^[1]

Genetic links to cyclothymia are well supported, with a 57% concordance rate shown in identical twins. This means that if one twin has cyclothymic disorder, there is a 57% chance that the other twin has it as well. Additionally, current research is exploring how genes may play a role in mood and energy regulation, and the mechanisms behind how genetics influences cyclothymia.^[1]

For decades, research has revealed strong evidence that the brain chemicals responsible for mood and energy levels do not function properly in bipolar disorders like cyclothymia. It is thought that chemicals such as dopamine, noradrenaline, and serotonin (involved in mood regulation and energy) may all play a role in causing the mood swings seen in these conditions.^[4]

Environmental factors also significantly influence the development of bipolar disorders, including cyclothymia. As with many mental health conditions, stressful or traumatic life experiences or ongoing negative thinking patterns are linked to greater emotional instability and difficulty regulating mood.^[1]

Who is Likely to be Affected by Cyclothymia?

Cyclothymic disorder is more likely to affect individuals who have a family history of mood disorders. People who have close relatives with bipolar disorder or other mood-related conditions are also at higher risk. Chronic stress or traumatic life experiences, particularly those experienced early in life, are thought to increase the risk of developing cyclothymia.^[1]

People who suffer from anxiety, personality disorders, impulsive behavior, or substance use disorders are more likely to have cyclothymia - although these conditions are not believed to cause cyclothymic disorder. That said, imbalanced brain chemicals seen in these co-occurring conditions can contribute to the mood swings and emotional instability seen in this disorder.^[1][4]

Finally, the age of onset is an important factor that can indicate a vulnerability for developing cyclothymia. Cyclothymic disorder typically begins in adolescence, with early signs of mood instability often emerging during the teenage years. The earlier the onset of mood symptoms, the more likely an individual is to develop cyclothymia or other mood disorders later in life.^[1]

Diagnosing Cyclothymia

Cyclothymic disorder can be challenging for clinicians to identify, as many patients exhibit non-specific symptoms that may be confused with those of other psychiatric conditions like bipolar II or cluster B personality disorders. That said, the DSM-5 specifies the following criteria for diagnosis:^[1][2]

• Numerous periods of elevated mood (hypomanic symptoms) and low mood (depressive symptoms) for a duration of at least two years (or one year in children and adolescents), with mood fluctuations occurring during at least 50% of that time.

• Stable mood periods typically last less than two months.

• Symptoms cause impairment in social, occupational, academic, or other important areas of functioning but do not meet the full diagnostic criteria for bipolar disorder, major depressive disorder, or any other mental health condition.

• Symptoms are not attributable to the effects of substances or an underlying medical condition.

Along with the emotional instability and increased energy levels of hypomanic or depressive episodes, signs like heightened sensitivity, reacting in a way that is considered disproportionate to the situation, and trouble in relationships can suggest cyclothymia. While the symptoms of cyclothymic disorder can be unclear, a thorough and careful medical evaluation can help providers identify this frequently elusive disorder.^[1]

After ruling out physical health issues, a doctor is likely to suggest a complete psychiatric evaluation. This includes reviewing the person's current symptoms, past mental health history, social background, history of substance use, family mental health history, other potential psychiatric symptoms, and mental health assessments.^[1]

Cyclothymia Tests and Assessments

The early work in defining cyclothymic disorder was significantly contributed to by Hagop Akiskal, a pioneering researcher in the field. His efforts helped shape the understanding of this condition, with his validated questionnaires, the TEMPS-A and Cyclothymic-Hypersensitivity scales, becoming key tools in diagnosing and assessing cyclothymia:^[1]

TEMPS-A Temperament Scale

This self-assessment tool is designed to identify long-standing emotional and behavioral patterns that often begin in childhood and remain stable over time. The scale examines how emotional sensitivity, mood fluctuations, energy shifts, and interpersonal traits may manifest as a person’s temperament.^[5]

Cyclothymic-Hypersensitivity Scales

This assessment identifies two main patterns - one linked to moodiness and emotional sensitivity, and another tied to impulsive behavior and difficulty regulating emotions. Higher scores on this questionnaire are associated with more challenges in daily functioning and can help distinguish people with mood disorders from those without.^[6]

Long-Term Prognosis

The outlook for people with cyclothymia differs from individual to individual. Prognosis often depends on how well a person copes with stress, their personality traits, the level of support they receive from their support system, and how early they begin treatment. With early support, many people with cyclothymia are able to live fulfilling, stable lives.^[1]

Treatment for Cyclothymia

Treating cyclothymia involves understanding personal risk factors, recognizing early warning signs, and using the right combination of treatments. The main goal of treatment is to help stabilize symptoms of ongoing emotional highs and lows that disrupt a person’s daily quality of life. This often includes a mix of psychoeducation, therapy, and sometimes medication.^[1]

Psychoeducation

Learning about a mental health condition is known as psychoeducation and is a key part of treatment. People with cyclothymia have been shown to benefit from understanding how their emotions and behaviors affect their relationships and overall well-being. Psychoeducation also helps people with cyclothymia accept their diagnosis and adhere to a treatment plan.^[1]

Cognitive Behavioral Therapy (CBT)

Among different therapy approaches, cognitive behavioral therapy has shown the most consistent results for people with cyclothymia. CBT helps individuals recognize and challenge negative thought patterns and behaviors that may worsen mood swings. Regular counseling also supports emotional regulation and problem-solving in relationships or work situations.^[1]

CBT works both as a therapeutic method and a practical tool for people with cyclothymia, as it is grounded in learning theory and focuses on collaboration. Psychoeducation delivered in a cognitive behavioral therapy-informed style tends to be more effective than a traditional lecture-based approach.^[7]

Medication

At present, there are no FDA-approved medications specifically for cyclothymic disorder. However, doctors often prescribe mood stabilizers to help manage symptoms. Each person’s experience with cyclothymia is different, so treatment should be customized and adjusted as needed. Here is the current research on how various medications can affect cyclothymia:^[1]

• Valproate may help if anxiety is a major issue.

• Lamotrigine can be helpful if depressive and anxious moods are more common.

• Lithium is often used when there are intense emotional highs and lows.

• A combination of lithium and lamotrigine may be prescribed for optimal results.

• Atypical antipsychotics might also be used alone or alongside mood stabilizers.

• Antidepressants are generally avoided as they sometimes make symptoms worse in people with cyclothymia.

Living with Cyclothymia

Individuals with cyclothymiaCyclothymic individuals who experience hypomania may actually find it enjoyable and experience boosts in energy and productivity. This can make it challenging for the person to understand how this symptom can cause issues. Even if loved ones begin to notice the mood swings and suspect bipolar disorder, the individual with hypomanic symptoms might deny that anything is wrong because they view the energy and productivity as a benefit.

However, like other psychiatric conditions, cyclothymia can cause significant distress and impair functioning, particularly if left untreated. The complications linked to cyclothymia are as varied as the different manifestations that appear in people with the disorder. These can range from mild medication side effects to tragic outcomes like suicide.^[1]

More commonly, problems include issues tied to emotional instability, like trouble managing impulses or self-medicating with substances and potentially developing a dependence. In some cases (especially in young people), cyclothymia can eventually develop into bipolar, and there is also a higher risk of developing other co-occurring mental health disorders.^[1]

While early intervention is ideal, treatment can help even if the disorder is only diagnosed later in life, and plays an important role in managing symptoms, as well as potentially preventing the onset of other mental health conditions. With a comprehensive treatment plan, individuals with cyclothymia can significantly improve their emotional stability and their day-to-day experience.

Managing Cyclothymia

Managing cyclothymia often involves going to therapy and taking medications as prescribed, even during periods when a person feels well. Additionally, it is important to stay alert to any warning signs of mood changes (you can use a mood tracker app), and notify mental health providers so as to modify treatment and prevent symptoms from worsening.^[3]

Depending on professional recommendations, this could look like adjusting medications, or attending more therapy sessions, or integrating additional supports, like group therapy. Individuals with cyclothymia are advised to avoid alcohol and recreational drugs (in case of developing substance use disorder), to check with a healthcare provider before taking new medications, and to keep track of their daily moods and routines.

Regular exercise, consistent sleep habits, and enlisting the support of loved ones can also make a big difference in maintaining stability and preventing relapses. For those who do not have the assistance of family or friends, mental health support groups can provide encouragement and practical advice.

Additional Resources

Although support groups specifically for cyclothymia are currently not available, several broader mental health organizations provide helpful resources and communities for people with bipolar spectrum conditions, including cyclothymia.

Groups such as the International Bipolar Foundation, the Depression and Bipolar Support Alliance (DBSA), and the National Alliance on Mental Illness (NAMI) offer support groups, as well as education and resources that can be valuable for those managing cyclothymia.

Additionally, guided meditations and yoga (whether for beginners or more advanced individuals) can help with relaxation and stress management during challenging moments. There are plenty of meditations and yoga classes available on YouTube that can help with self-soothing.

Final Thoughts

Cyclothymia is a milder form of bipolar disorder marked by persistent emotional highs (hypomania) and lows (depression) that often disrupt work, relationships, and daily functioning. Though less intense than bipolar I or II, the symptoms of cyclothymia can still have a profound impact on an individual's quality of life.

Early diagnosis is often complicated by symptoms overlapping with other conditions, but careful evaluation and the use of structured assessments can support accurate identification. With professional treatment (prescribed medication and therapy), many people living with cyclothymia can manage their symptoms effectively and lead emotionally balanced, fulfilling lives.