Bipolar disorder affects approximately 5.7 million American adults, or about 2.6 percent of the U.S. population age 18 and older in a given year. Bipolar disorder is characterized by periods of excitability (mania) alternating with periods of depression. The "mood swings" between mania and depression can be very abrupt. Bipolar disorder is also known as manic depression or bipolar affective disorder.
What causes Bipolar Disorder and who is at risk?
Bipolar disorder affects men and women equally and usually appears between the ages of 15 and 25. The exact cause is unknown, but it occurs more often in relatives of people with bipolar disorder. It is a result of disturbances in the areas of the brain that regulate mood. During manic periods, a person with bipolar disorder may be overly impulsive and energetic, with an exaggerated sense of self. The depressive phase brings overwhelming feelings of anxiety, low self-worth, and suicidal thoughts.
Types of Bipolar Disorder
There are two primary types of bipolar disorder. People with bipolar disorder I have had at least one fully manic episode with periods of major depression. In the past, bipolar disorder I was called manic depression.
People with bipolar disorder II seldom experience full-fledged mania. Instead they experience periods of hypomania (elevated levels of energy and impulsiveness that are not as extreme as the symptoms of mania). These hypomanic periods alternate with episodes of major depression.
A mild form of bipolar disorder called cyclothymia involves periods of hypomania and mild depression, with less-severe mood swings. People with bipolar disorder II or cyclothymia may be misdiagnosed as having depression alone.
Symptoms of Bipolar Disorder
The manic phase may last from days to months and can include the following symptoms:
- Elevated mood
- Racing thoughts
- Increased energy
- Lack of self-control
- Inflated self-esteem (delusions of grandeur, false beliefs in special abilities)
- Over-involvement in activities
- Reckless behavior
- Spending sprees
- Binge eating, drinking, and/or drug use
- Sexual promiscuity
- Impaired judgment
- Tendency to be easily distracted
- Little need for sleep
- Easily agitated or irritated
- Poor temper control
These symptoms of mania are seen with bipolar disorder I. In people with bipolar disorder II, hypomanic episodes involve similar symptoms that are less intense.
The depressed phase of both types of bipolar disorder involves very serious symptoms of major depression:
- Persistent sadness
- Fatigue or listlessness
- Sleep disturbances
- Excessive sleepiness
- Inability to sleep
- Eating disturbances
- Loss of appetite and weight loss
- Overeating and weight gain
- Loss of self-esteem
- Feelings of worthlessness, hopelessness and/or guilt
- Difficulty concentrating, remembering, or making decisions
- Withdrawal from friends
- Withdrawal from activities that were once enjoyed
- Persistent thoughts of death
There is a high risk of suicide with bipolar disorder. Patients may abuse alcohol or other substances in either the manic or the depressive phase and this can worsen the symptoms.
Sometimes there is an overlap between the two phases. Manic and depressive symptoms may occur simultaneously or in quick succession in what is called a mixed state.
In order to make a diagnosis of bipolar disorder, your physician will consider a number of factors. He/she may do some or all of the following:
- Observe your behavior and mood
- Obtain your medical history, including any medical problems you have and any medications you take
- Ask about your recent mood swings and how long you've experienced them
- Ask about your family medical history, particularly whether anyone in your family has or had bipolar disorder
- Perform a thorough examination to identify or rule out physical causes of the symptoms you are experiencing
- Request laboratory tests to check for thyroid problems or drug levels
- Speak with your family members to discuss their observations about your behavior
Use of recreational drugs may be responsible for some of the symptoms of bipolar disorder although this does not rule out bipolar affective disorder. Drug abuse may itself be a symptom of bipolar disorder.
Call your doctor if:
- You are having thoughts of death or suicide
- You are experiencing severe symptoms of depression or mania
- You have been diagnosed with bipolar disorder and your symptoms have returned or you are having any new symptoms
|Generic Name||Brand Name(s)|
|divalproex sodium||Depakote, Depakote ER|
|lithium||Eskalith, Eskalith-CR, Lithobid|
|Generic Name||Brand Name(s)|
|aripiprazole||Abilify, Abilify Discmelt|
|olanzapine||Zyprexa, Zyprexa Zydis|
|fluoxetine and olanzapine||Symbyax|
|risperidone||Risperdal, Risperdal M-Tab|
Anti-psychotic drugs can help a person who has lost touch with reality. Anti-anxiety drugs, such as benzodiazepines, may also help. The patient may need to stay in a hospital until his or her mood has stabilized and the symptoms are under control.
Antidepressant drugs may be useful during the depressive phase provided the antidepressants are used with a mood stabilizer. Mood stabilizers are very important in people with bipolar disorder. Without a mood stabilizer, antidepressants may trigger mania in people with bipolar disorder. (Keep in mind that people with bipolar disorder II may be misdiagnosed with depression only because they do not experience full-fledged mania. If these patients take antidepressants without mood stabilizers, it can trigger a manic episode.)
Electroconvulsive therapy (ECT) may be used to treat bipolar disorder. ECT is a psychiatric treatment that uses an electrical current to cause a brief seizure of the central nervous system while the patient is under anesthesia. Studies have repeatedly found that ECT is the most effective treatment for depression that is not relieved with medications.
Getting enough sleep helps keep a stable mood in some patients. Psychotherapy may be a useful option during the depressive phase. Joining a support group may be particularly helpful for bipolar disorder patients and their loved ones.