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What is Bipolar Disorder?
Causes
Symptoms
Diagnosis
Treatment and Therapy
Helping Someone with Bipolar Disorder
Living Well with Bipolar Disorder
Frequently Asked Questions
Sources and Bibliography

What is Bipolar Disorder?

Bipolar disorder, also known as manic-depressive illness, is a brain disorder that causes unusual and often dramatic shifts in a person’s mood, energy levels, and ability to carry out everyday activities. Unlike the normal ups and downs everyone experiences, the mood changes seen in bipolar disorder are more extreme, last longer, and can significantly interfere with a person’s relationships, work, and overall quality of life.

There are four main types of bipolar disorder, and all of them involve clear changes in mood, energy, and activity levels. Mood states range from periods of extreme elation, energy, and euphoric or irritable behavior, known as manic episodes, to periods of intense sadness, emptiness, and hopelessness, known as depressive episodes. Less severe manic periods are referred to as hypomanic episodes.

Bipolar I disorder is defined by manic episodes that last at least 7 days, or by manic symptoms so severe that the person requires immediate hospitalization. Most people with bipolar I disorder also experience depressive episodes, typically lasting at least 2 weeks. Episodes with mixed features, meaning depressive and manic symptoms occurring at the same time, are also possible.
Bipolar II disorder is defined by a pattern of depressive episodes and hypomanic episodes, but without the full-blown manic episodes that characterize bipolar I disorder.
Cyclothymic disorder (or cyclothymia) involves numerous periods of hypomanic symptoms alongside numerous periods of depressive symptoms, lasting for at least 2 years in adults (or 1 year in children and adolescents). However, these symptoms do not meet the full diagnostic criteria for a hypomanic or depressive episode.
Other specified and unspecified bipolar and related disorders describe bipolar symptoms that do not match any of the three categories listed above but still cause significant distress or impairment.

Bipolar disorder is a chronic, lifelong condition, with episodes of mania and depression that typically recur over time. Between episodes, many people with bipolar disorder experience no mood disturbances at all, although some patients continue to have residual or lingering symptoms even between episodes. Continuous, long-term treatment is the most effective way to keep these symptoms under control and reduce the frequency and severity of future episodes.

Causes

Although the exact causes of bipolar disorder remain unknown, most researchers agree that there is no single cause. Instead, it is likely that many different factors combine and interact with one another to contribute to the development of the disorder or increase a person’s risk of developing it.

Among the most significant contributing factors are:

Biochemical abnormalities and dysfunctions in the brain
Genetic predisposition
Environmental and psychosocial stressors

Brain Structure and Function

Several studies suggest that the brains of people with bipolar disorder may differ structurally and functionally from the brains of people without the condition, as well as from those with other mental health disorders. For example, researchers have found evidence suggesting that manic episodes may result from an excess of norepinephrine, a key brain neurotransmitter involved in regulating mood, alertness, and energy, while depressive episodes appear to be linked to insufficient levels of this same chemical messenger.

Other neurotransmitters, including serotonin and dopamine, are also thought to play important roles in regulating mood and are likely involved in the biology of bipolar disorder as well. A better understanding of these brain differences, combined with new insights from genetic research, will help the scientific community better understand bipolar disorder and predict which treatments are likely to be most effective for individual patients.

Genetic Factors

Some research indicates that people with a specific genetic makeup are more likely to develop bipolar disorder, but genes alone are not the only risk factor. Studies of identical twins have shown that even when one twin develops bipolar disorder, the other twin does not always develop the condition as well, despite identical twins sharing exactly the same genetic material. This finding demonstrates that no single gene is responsible for bipolar disorder. Instead, the condition results from a complex combination of multiple genetic factors interacting with environmental influences.

Having a first-degree relative, such as a parent or sibling, with bipolar disorder does increase an individual’s risk of developing the condition themselves, but it by no means guarantees that they will. Genetic risk simply increases vulnerability; it does not determine destiny.

Triggers

A particularly stressful circumstance or life event can act as the trigger that brings on the first symptoms of bipolar disorder in someone who is already genetically or biologically predisposed to the condition. Common examples of stressful triggering events include:

The end of a romantic relationship
Physical, sexual, or psychological abuse
The loss of a close family member or loved one
Serious illness
Sleep disturbances
Significant everyday stressors, such as financial difficulties, problems at work, or emotional turmoil

It is worth noting that while these triggers can bring on the first episode or a relapse in someone already living with bipolar disorder, they are not the underlying cause of the condition itself. Rather, they act on an existing biological vulnerability.

Symptoms

A person with bipolar disorder experiences periods of unusually intense emotions, changes in sleep patterns and activity levels, and behaviors that are noticeably different from their usual self. These periods are called mood episodes, and they are dramatically different from the normal fluctuations in mood and behavior experienced by someone without the condition.

Without treatment, manic episodes can last anywhere from three to six months, while depressive episodes tend to last even longer, typically between six and twelve months. This underscores just how important early recognition and consistent treatment are in managing the condition effectively.

Extreme changes in energy, activity, and sleep patterns accompany these mood episodes.

Signs of a Manic Episode

During a manic episode, a person may:

Feel very “up”, elated, or euphoric
Have a lot of energy
Experience increased activity levels
Feel jumpy, wired, or agitated
Have trouble sleeping, or need very little sleep
Be more active than usual
Talk very fast, jumping quickly between many different topics
Feel irritable, touchy, or easily agitated
Feel as though their thoughts are racing
Believe they can accomplish many things at once, more than is realistically possible
Engage in risky or reckless behavior, such as spending large amounts of money impulsively or engaging in unprotected or reckless sexual activity

Signs of a Depressive Episode

During a depressive episode, a person may:

Feel very sad, down, empty, or hopeless
Have very little energy
Show decreased activity levels
Experience sleep disturbances (sleeping either too little or too much)
Feel unable to enjoy anything they once found pleasurable
Feel worried, anxious, and empty
Have difficulty concentrating
Forget things easily
Eat too much or too little
Feel tired or physically slowed down
Have thoughts of death or suicide

Sometimes a mood episode includes symptoms of both mania and depression at the same time. This is known as an episode with mixed features. People experiencing a mixed episode may feel very sad, empty, or hopeless, while simultaneously feeling extremely energized.

Bipolar disorder can also be present even when mood swings are less extreme. For example, some people with bipolar disorder experience hypomania, a less severe form of manic episode. During a hypomanic episode, a person might feel very positive, highly productive, and generally well-functioning. They may not feel that anything is wrong, even though family members and friends will often notice the change in mood or activity levels that signals a possible underlying bipolar disorder. Without proper treatment, a person experiencing hypomania can go on to develop full-blown mania or severe depression.

Diagnosis

Accurate diagnosis and appropriate treatment help people with bipolar disorder lead healthy, productive lives. Talking to a doctor or another qualified mental health professional is the first step for anyone who suspects they may have bipolar disorder. The doctor will typically conduct a thorough physical examination to rule out other medical conditions that could be causing similar symptoms, such as thyroid problems or the effects of certain medications.

If the symptoms are not caused by another medical condition, the doctor may perform a mental health evaluation or refer the patient to a specialist, such as a psychiatrist, who has specific expertise in diagnosing and treating bipolar disorder.

People with bipolar disorder tend to seek help more readily when they are experiencing depression than during manic or hypomanic episodes, since manic symptoms can feel pleasurable or productive and are therefore less likely to be recognized as a problem by the person experiencing them.

For this reason, a careful and detailed medical history is essential to make sure that bipolar disorder is not mistakenly diagnosed as major depression. Unlike people with bipolar disorder, individuals who suffer only from depression (also called unipolar depression) do not experience manic episodes, although they may occasionally show some manic-like symptoms in a condition known as major depression with mixed features.

Bipolar Disorder and Other Conditions

Some symptoms of bipolar disorder overlap with those of other conditions, which can often complicate diagnosis. In addition, many patients with bipolar disorder also have co-occurring conditions, such as:

Anxiety disorders
Substance use disorders
Eating disorders, such as bulimia nervosa

People with bipolar disorder also have an increased risk of developing several physical health conditions, including:

Thyroid disease
Migraines
Heart disease
Diabetes
Obesity

and other physical illnesses, making regular medical checkups an important part of long-term care for anyone living with bipolar disorder.

Psychosis

Patients experiencing severe manic or depressive episodes may also develop psychotic symptoms, such as hallucinations or delusions. These psychotic symptoms tend to align with the person’s underlying mood state. For example:

A person experiencing psychotic symptoms during a manic episode might believe they are famous, extremely wealthy, or possess special powers.
A person experiencing psychotic symptoms during a depressive episode might believe they are financially ruined, penniless, or have committed a serious crime.

Because of this overlap, patients with bipolar disorder who also experience psychotic symptoms are sometimes mistakenly diagnosed with schizophrenia instead. A careful, longitudinal evaluation of the patient’s mood history is essential to distinguish between these two very different conditions.

Anxiety and Attention-Deficit/Hyperactivity Disorder

Anxiety disorders and attention-deficit/hyperactivity disorder (ADHD) are frequently diagnosed alongside bipolar disorder, particularly in children and adolescents, which can further complicate both diagnosis and treatment planning.

Substance Abuse

Patients with bipolar disorder may also develop substance use disorders involving alcohol or drugs, experience relationship difficulties, or struggle with poor performance at school or work. Patients, family members, and friends may not always realize that these problems are, in fact, symptoms of an underlying serious mental illness such as bipolar disorder, rather than simple personal failings or lack of willpower.

Treatment and Therapy

Treatment allows even people with the most severe forms of bipolar disorder to achieve better control over their mood swings and other characteristic symptoms. In most cases, an effective treatment plan will involve a combination of medication and psychotherapy, tailored to the individual patient’s needs and symptom pattern.

In many cases, medication alone does not guarantee satisfactory results, and despite years of research, relatively few genuine breakthroughs have made their way into everyday clinical practice. While effective options exist for managing acute episodes, lithium generally remains the first-choice medication for long-term prevention of future episodes. For all these reasons, the most effective approach usually combines several different strategies:

Mood stabilizing medications taken every day, long-term, to help prevent future manic and depressive episodes
Medications to treat acute symptoms of depression or mania as they occur, alongside learning to recognize early triggers and warning signs of an approaching episode
Psychological treatment (psychotherapy), which helps patients manage depressive symptoms and offers practical guidance on improving relationships with others
Lifestyle guidance, including engaging in regular physical activity, scheduling enjoyable activities to build a sense of accomplishment, and practical advice on improving diet and sleep quality

Improvement takes time, and the journey is rarely easy, but consistent therapy remains the most reliable way to start feeling better. Here are some additional practical tips:

Talk openly with your doctor about your treatment plan
Take all medications exactly as prescribed
Follow a consistent daily routine for eating and sleeping
Make sure you are getting enough sleep each night
Learn to recognize the early warning signs of your own mood swings
Ask a friend or family member to help you stay on track with your treatment
Be patient with yourself, since real improvement takes time

What to Expect from Treatment in Children and Adolescents

With proper treatment and specialized support, children and adolescents with bipolar disorder can absolutely improve over time, especially when doctors, parents, and young patients work together as a team.

Parents can help make treatment more effective by keeping a daily record of their child’s mood, behavior, and sleep patterns. This record, often called a “mood diary” or “mood chart”, can help both parents and children better understand and track the illness over time. It can also be extremely helpful for the treating physician, who can use it to assess whether the current treatment plan is actually working.

Childhood bipolar disorder can change over time, and when this happens, treatment often needs to be adjusted accordingly:

The child may need to switch to a different medication
Other changes to the therapeutic approach may become more effective
Symptoms may reappear after a period of stability, requiring further treatment adjustments

Treatment can take considerable time to show results, but following it faithfully and consistently helps many children and adolescents successfully manage their bipolar symptoms and lead normal, fulfilling lives.

Medications

Several different types of medications can help control the symptoms of bipolar disorder:

Lithium and other mood stabilizers
Antipsychotic medications
Anti-anxiety medications
Antidepressants

A patient may need to try several different medications, or combinations of medications, before finding the one that works best for them. Regardless of which medication is used, it is important for every patient to:

Discuss the risks and benefits of any medication thoroughly with their doctor or pharmacist
Promptly report any concerns about side effects to their doctor, who may need to adjust the dose or switch to a different medication
Never stop taking a medication without first discussing it with their doctor, since abruptly stopping a medication can trigger a relapse or worsening of bipolar symptoms, and can also cause uncomfortable, and sometimes dangerous, withdrawal symptoms

Psychotherapy

When combined with medication, psychotherapy can be highly effective in the treatment of bipolar disorder. It provides support, education, and practical guidance to both patients and their families.

Examples of psychotherapeutic approaches used in the treatment of bipolar disorder include:

Cognitive behavioral therapy (CBT)
Family-focused therapy
Interpersonal and social rhythm therapy
Psychoeducation

One of the most important psychological skills a patient can develop is the ability to recognize the early warning signs of an approaching manic or depressive episode. While recognizing these signs will not necessarily prevent the episode from occurring altogether, it allows the patient and their treatment team to make timely adjustments to the treatment plan, which can significantly reduce the severity and duration of the resulting symptoms.

Other Treatment Options

Electroconvulsive Therapy (ECT)

Electroconvulsive therapy, commonly known as ECT, can relieve symptoms in people with severe bipolar disorder who do not respond adequately to other treatments. ECT is sometimes used to treat bipolar symptoms when other circumstances, such as pregnancy, make standard medication too risky to use. ECT can cause short-term side effects, including confusion, disorientation, and memory loss.

Anyone considering ECT for bipolar disorder should carefully discuss the potential benefits and risks with a qualified physician before proceeding.

Sleep Medications

People whose bipolar disorder is accompanied by sleep difficulties generally benefit from treatments that specifically target sleep problems. If insomnia does not improve with standard treatment, the doctor may suggest alternative medication strategies. If the problem persists, the doctor may prescribe sedatives or other sleep aids to help restore a healthy sleep pattern.

Supplements

Comprehensive, well-designed research on herbal remedies or natural supplements and their effects on bipolar disorder remains limited.

It is essential that your doctor be aware of any and all medications, whether prescription or over-the-counter, as well as any supplements you are taking. Combining certain medications and supplements can cause unwanted or even dangerous interactions.

Keeping a Mood Diary

Mood episodes can still occur even with appropriate, consistent treatment. The best results are achieved when patients and doctors work together as partners, openly discussing concerns and treatment decisions. Keeping a daily diary that records mood symptoms, treatments, sleep patterns, and significant life events can be an invaluable tool for monitoring and effectively managing bipolar disorder over the long term.

Helping Someone with Bipolar Disorder

How to Help a Child or Adolescent

Help begins with an accurate diagnosis and appropriate treatment. If you suspect that your child may have bipolar disorder, schedule an appointment with their pediatrician to discuss the symptoms you have observed.

If your child has been diagnosed with bipolar disorder, you can help by following some basic guidelines:

Be patient
Encourage your child to talk, and listen to them with your full attention
Be understanding and compassionate during mood episodes
Help your child engage in enjoyable activities
Help your child understand that treatment can genuinely improve their life

How to Help an Adult with Bipolar Disorder

Encourage the person to see a doctor for proper diagnosis and treatment. It may be necessary to schedule the appointment for them and accompany them to the visit. Here are some helpful behaviors to adopt:

Be patient
Encourage the person to talk, and listen carefully to what they share
Be understanding of their mood swings
Include them in enjoyable activities and social outings
Remind them that it is possible to feel better with proper, consistent treatment

What to Do During a Crisis

If you are in contact with someone who might hurt themselves, or if you yourself are having thoughts of self-harm, seek help immediately. Here are some important steps to take:

Do not leave the person alone
Contact their doctor as soon as possible
Call emergency services or go to the nearest emergency room

If you or someone you know is having thoughts of suicide, it is important to treat this as a medical emergency and seek immediate professional help.

The Impact of Bipolar Disorder on Friends and Family

Having a friend or family member with bipolar disorder also has a significant impact on your own life. Caring for someone with the condition can be a major source of stress. It requires learning to navigate mood swings and sometimes other related problems, such as alcohol abuse. In some cases, this stress can strain relationships with others. Caregivers may find that their work performance suffers, or that they no longer have enough time for themselves and their own needs.

For this reason, it is essential for caregivers to also take care of their own wellbeing. Try to find someone you trust to talk to about your own feelings and experiences. Ask your doctor about local support groups for family members of people with bipolar disorder. By managing your own stress levels effectively, you will be in a much better position to support your loved one, who in turn will find it easier to stay engaged with and committed to their treatment program.

Living Well with Bipolar Disorder

While bipolar disorder is a lifelong condition, it is important to remember that a diagnosis is not a life sentence of instability. With consistent treatment, many people with bipolar disorder go on to build successful careers, maintain healthy relationships, and raise families. Some strategies that support long-term stability include:

Sticking closely to a consistent daily routine, particularly around sleep and meal times
Building a strong support network of family, friends, and mental health professionals
Avoiding alcohol and recreational drug use, which can trigger episodes and interfere with medication
Learning personal early warning signs and having a clear action plan in place for when they appear
Staying engaged in regular follow-up appointments, even during periods of stability
Practicing stress management techniques, such as mindfulness, yoga, or regular physical exercise

Recovery is rarely a straight line, and setbacks are a normal part of living with a chronic condition. What matters most is maintaining an ongoing, honest relationship with a trusted healthcare team and not giving up on treatment, even after difficult periods.

Frequently Asked Questions

Can bipolar disorder be cured?

Bipolar disorder is currently considered a chronic, lifelong condition without a definitive cure. However, with appropriate long-term treatment, most people can achieve excellent control over their symptoms and lead full, productive lives.

At what age does bipolar disorder typically appear?

Bipolar disorder most commonly first appears in late adolescence or early adulthood, although it can also develop in children or later in adulthood. Early diagnosis and treatment are associated with better long-term outcomes.

Is bipolar disorder the same as having mood swings?

No. Everyone experiences normal ups and downs in mood, but bipolar disorder involves much more extreme, prolonged, and disruptive changes in mood, energy, and behavior that significantly interfere with daily functioning, relationships, and work.

Can someone with bipolar disorder live a normal life?

Yes. With an accurate diagnosis and consistent, appropriate treatment, most people with bipolar disorder can lead stable, fulfilling, and productive lives, including maintaining careers, relationships, and families.

Is bipolar disorder hereditary?

Genetics play an important role in bipolar disorder, and having a close family member with the condition increases an individual’s risk. However, genetics alone do not determine whether someone will develop the disorder, since environmental and psychosocial factors also play a significant role.

Bipolar Disorder: Symptoms, Causes and Treatment