Bipolar disorder

What is bipolar disorder?

Bipolar disorder, once known as manic depression, is a mental health condition that causes strong shifts in mood, energy, and activity. Beyond periods of low mood, it involves episodes of mania or hypomania, which are stretches of high energy and elevated mood, alongside episodes of depression. Between episodes, many people have periods of steady mood, called euthymia.

About 3 out of every 100 U.S. adults have bipolar disorder in a given year, and it affects men and women in similar numbers. It is often confused with depression, but the defining difference is the presence of manic or hypomanic episodes on top of the low periods. That distinction is part of why an accurate diagnosis sometimes takes time.

Providers recognize a few types of bipolar disorder. Bipolar I involves at least one full manic episode, which can be severe enough to need hospital care. Bipolar II involves hypomania, a milder high, together with depression, but never a full manic episode. Cyclothymia brings milder mood swings that continue for two years or more.

What are the symptoms of bipolar disorder?

Bipolar disorder shows up as episodes that shift your mood, energy, and activity for days, weeks, or sometimes months. These episodes are a clear change from your usual self, and they tend to fall into two opposite states.

Symptoms of a manic or hypomanic episode reflect an unusually high or energized mood.

• Feeling extremely happy, euphoric, or unusually powerful
• Racing thoughts, rapid speech, and restlessness
• High energy with little need for sleep
• Impulsive or risky behavior, like overspending or reckless decisions

Symptoms of a depressive episode mirror those of major depression.

• Deep sadness, hopelessness, or loss of interest in things you enjoy
• Low energy, fatigue, or trouble concentrating
• Sleeping or eating more or less than usual
• Thoughts of death or suicide

Some people also have mixed episodes, with symptoms of both at once, or rapid cycling, with four or more episodes in a year. If these mood shifts are disrupting your daily life, a professional can help you make sense of the pattern.

Who is at increased risk for bipolar disorder?

There is no single cause of bipolar disorder, and researchers believe it develops as several factors add up over time. Genetics, brain chemistry, and brain structure all appear to play a role, shaped by life experiences. Knowing the common risk factors can help you understand your own picture, even though having them does not mean you will develop the condition.

Biological factors

• A family history of bipolar disorder, which plays a strong role
• Differences in brain chemistry involving messengers like dopamine and serotonin
• Small differences in brain structure and the connections between brain areas

Life and environmental factors

• Childhood trauma, such as emotional abuse or neglect
• Major life stressors, like the loss of a loved one, divorce, or job loss
• Disrupted sleep or substance use, which can set off mood episodes

Symptoms most often begin in the teens or early adulthood, though a diagnosis can come later. Because the causes are still being studied, these factors describe risk rather than certainty.

How is bipolar disorder treated?

Bipolar disorder is a lifelong condition, but it is very manageable, and most people find stability with a combination of medication and therapy. Medication is usually the foundation, with therapy and steady routines adding important support.

Medication is the cornerstone of treatment. Doctors often prescribe mood stabilizers such as lithium and atypical antipsychotics to smooth out mood episodes. Antidepressants are used carefully and usually paired with a mood stabilizer, since on their own they can trigger mania.

Cognitive behavioral therapy (CBT) helps you recognize the thoughts and behaviors tied to mood shifts and build healthier coping habits. It can also make early warning signs easier to catch before an episode builds.

Interpersonal and social rhythm therapy (IPSRT) focuses on steadying daily routines like sleep, meals, and activity, because regular rhythms help protect against mood episodes. It also helps you manage the relationship stress that can come with the condition.

Other options may help when symptoms do not respond to medication. These include electroconvulsive therapy (ECT), transcranial magnetic stimulation (TMS), and ketamine therapy, which a provider can explain in more detail.

Finding the right combination takes time and adjustment. Taking medication consistently, even during stretches when you feel well, is one of the most important parts of staying steady.

When should you seek help?

It is a good idea to reach out to a professional if mood swings are affecting your sleep, relationships, work, or daily routine, or if you notice the highs and lows becoming more frequent or intense. Because bipolar disorder can be hard to spot on your own, it often helps to involve someone close to you who may notice changes you miss.

Some symptoms need emergency care right away. Call or text 988, the Suicide and Crisis Lifeline, or call 911 if you are having thoughts of suicide or self-harm, or if you experience hallucinations or delusions. Bipolar disorder is serious, but with the right support many people live full, steady lives. Whenever you feel ready, help will be there for you.