The DSM IV: Major Diagnostic Criteria
DSM-IV Diagnostic Criteria For Bipolar II Disorder
- One or more major depressive episodes and at least one hypomanic episode
- Mood episodes cannot be due to a medical condition, medication, drugs
of abuse, toxins or treatment for depression.
- Symptoms cannot be accounted for by a psychotic disorder.
Clinical Features of Bipolar II Disorder
- Hypomanic episodes tend to occur in close proximity to depressive
- Episodes occur more frequently with age.
- Social and occupational consequences of Bipolar II can be severe (e.g.
job loss and divorce).
- These patients have a suicide rate of 10-15%
- Common co-morbid diagnoses includes substance-related disorders, eating
disorders, attention deficit hyperactivity disorder, borderline personality
- Rapid cycling pattern carries a poor prognosis.
- The lifetime prevalence of bipolar II is 0.5%
- Possibly more common in women.
Classification of Bipolar II Disorder
- Classification of bipolar II disorder involve, describing the current
or most recent mood episode which can be Hypomanic, or Depressive.
- The most recent episode can be further classified as follows
- Episodes without Psychotic Features.
- Episodes with Psychotic Features.
- Episodes with Catatonic Features.
- Episodes with Post partum Onset.
Bipolar II Disorder with Rapid Cycling
- Diagnosis requires the presence of at least 4 mood episodes within
- Episodes may include major depressive, manic, hypomanic or mixed.
- The patient must be symptom-free for at least 2 months between episodes
or the patient must display a change in mood to an opposite type of
Differential Diagnosis of Bipolar II Disorder
- Cyclothymic Disorder:
Mood episodes never meet criteria for full manic episode or full major
- Substance - Induced Mood Disorder: Rule out the effects
of medication, drugs of abuse, toxin exposure.
- Mood Disorder Due to a General Medical Condition.
Treatment of Bipolar II Disorder
- The treatment of Bipolar II disorder involves lithium and/or anticonvulsants,
and is similar to the treatment of in Bipolar I Disorder.
Bipolar 1 | Bipolar II | Bipolar
III | Cyclothymic Disorder
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