Rapid Cycling in Bipolar Disorder
How Is Rapid Cycling Bipolar Disorder Identified? continued...
Rapid cycling bipolar disorder can be difficult to identify since some episodes can simply wax and wane without resolving. As a result, they don't necessarily represent multiple separate and distinct episodes. Rapid cycling may seem to make the changing mood states of bipolar disorder more obvious, but because most people with rapid cycling bipolar disorder spend far more time depressed than manic or hypomanic, they are often misdiagnosed with unipolar depression.
For example, in one study of people with bipolar II disorder, the amount of time spent depressed was more than 35 times the amount of time spent hypomanic. Also, people often don't take note of their own hypomanic symptoms, mistaking them for a period of unusually good mood.
How Is Bipolar Disorder with Rapid Cycling Treated?
Because symptoms of depression dominate in most people with a rapid cycling course of bipolar disorder, treatment is usually aimed toward relieving depression while preventing the comings-and-goings of new episodes.
Antidepressants such as Prozac, Paxil, and Zoloft have not been shown to treat the depression symptoms of rapid cycling bipolar disorder, and may even increase the frequency of new episodes over time. Many experts therefore advise against the use of antidepressants (especially long term) in bipolar patients with rapid cycling.
Mood-stabilizing drugs -- such as lithiumDepakote, Tegretol or Lamictal -- are the core treatments of rapid cycling. Often, a single mood stabilizer is ineffective at controlling episode recurrences, resulting in a need for combinations of mood stabilizers. Several antipsychotic medicines such as Zyprexa or Seroquel also have been studied in rapid cycling and are used as part of a treatment regimen, regardless of the presence or absence of psychosis (delusions and hallucinations).
Treatment with mood stabilizers is usually continued even when a person is symptom-free. This helps prevent future episodes. Antidepressants, if and when used, are generally tapered as soon as depression is under control.
What Are the Risks of Rapid Cycling Bipolar Disorder?
The most serious risk of a rapid cycling course in bipolar disorder is suicide. People with bipolar disorder are 10 times to 20 times more likely to commit suicide than people without bipolar disorder. Tragically, 8% to 20% of people with bipolar disorder eventually lose their lives to suicide.
People with a rapid cycling course may be at even higher risk for suicide than those with nonrapid cycling bipolar disorder. They are hospitalized more often, and their symptoms are usually more difficult to control long term.
Treatment reduces the likelihood of serious depression and suicide. Lithium in particular, taken long term, reduces the risk.
People with bipolar disorder are also at higher risk for substance abuse. Nearly 60% of people with bipolar disorder abuse drugs or alcohol. Substance abuse is associated with more severe or poorly controlled bipolar disorder.