Chapter Six
Summary
Bipolar disorder is characterized by cycling between extreme highs or mania, and extreme lows or depression.
For some, the mania may be less intense and troublesome, so we refer to this as hypomania. While the typical age of
onset is about 19, it may be several years before a definitive diagnosis is made, especially for women. Although
effective treatments are available, most patients will fail to maintain treatment protocol in the first five years.
In contrast to unipolar depression, bipolar depression is thought to be endogenously caused. It may however,
be triggered by exogenous stimuli. The concordance rates among monozygotic twins can be as high as 70%. In many
cases, physicians and others fail to obtain adequate history and treat the more obvious depressive symptoms first. This
may trigger a manic or hypomanic episode.
Many other diseases have been known to cause or exacerbate mania. These include brain tumors, syphilis,
CNS trauma, delirium and dementia, hyperthyroidism, cancer, MS, Parkinson’s, hemodialysis, stroke, epilepsy, and
vitamin deficiencies just to name a few. Furthermore, drugs of abuse and other medications may cause manic type
symptoms. These include anti-hypertensives, antidepressants, cimetidine, steroids, disulfiriam, cocaine,
hallucinogens, PCP, opioids, and various stimulants.
Treatment of bipolar conditions can be difficult. Medications include mood stabilizers like lithium and other
anticonvulsants, but they may also include atypical antipsychotics . The choice of medication depends on which phase
of depression or mania the patient is exhibiting. Lithium is the “gold standard” as it may be used to control both the
manic and depressive aspects of the illness. Careful monitoring of lithium levels is essential to prevent toxic levels
that are very close to the actual therapeutic level.
Anticonvulsants are believed to increase the levels of GABA, the inhibiting neurotransmitter. This increased
inhibition leads to less neurotransmission and reductions in manic symptoms. These drugs include valproate,
carbamazepine and oxcarbazepine. Newer drugs like lamotrigine and topiramate may also be used. Topiramate has
an advantage over the others, as it is not associated with weight gain, and does not cause toxic rashes like lamotrigine.
It may also be helpful for patients who abuse drugs and alcohol as part of their mental illness.
Specific Discussion Questions:
1. Explain the major differences between Bipolar Type I and II. How would a medication regime change to
address the differences?
2. Explain why Bipolar illness is thought to have a genetic predisposition.
3. Why are good patient education and family therapy so important when working with Bipolar patients?
4. Aside from anticonvulsants, which anti psychotics have been approved for treating manic symptoms?