In-Depth Notes on Mania and Bipolar Spectrum Disorders

Bipolar Disorder Overview

• Jamison (2004) captures the dual nature of mania:
  • Manic Phase: High energy, rapid thoughts, heightened social interaction.
  • Declining Phase: Overwhelming thoughts, confusion, fear from others.

Characteristics of Bipolar Disorder

• Episodic mood regulation:
  • Mania: Elevated mood lasting 1 week or more.
  • Depressive episodes: Lasting 2 weeks or more.
• Consequences: Affects occupational, social functioning, increased mortality and suicidality.
• Global Perspective: Major cause of disability worldwide.

Phenomenology of Bipolar Spectrum Disorders

• Spectrum Definition: Mood-related difficulties varying in depression and mania intensity and duration.
• Categories:
  • Bipolar I: At least one manic episode.
  • Bipolar II: At least one hypomanic episode and major depressive episode.
  • Cyclothymic Disorder: Persistent hypomanic and depressive symptoms without severe episodes.
  • Bipolar Not Otherwise Specified: Mood changes not fitting other categories causing impairment.

Diagnostic Criteria for Bipolar I Disorder

• Manic Episode:
  • Duration: 1 week of continuous elevated mood and increased energy/activity.
  • Symptoms (3 minimum):
  • Inflated self-esteem/grandiosity.
  • Decreased sleep (e.g., feeling rested after 3 hrs).
  • Increased talkativeness.
  • Racing thoughts.
  • Distractibility.
  • Goal-directed activity increase or agitation.
  • Excessive risky behavior (purchasing sprees, etc.).

Severity of Manic Episodes

• Impact: Must be severe enough to impair social/occupational functioning or need hospitalization.
• Attribution: Cannot be due to other substances or medical conditions.

Hypomanic Episode in Bipolar I Disorder

• Diagnosis Requirements: 4 consecutive days displaying elevated mood and increased activity.
• Symptoms (3 minimum): Similar to manic episodes but less severe, causing notable functional change.

Major Depressive Episode Criteria

• Five (or more) symptoms over two weeks:
  • Depressed mood or loss of interest/pleasure.
  • Weight loss/gain or appetite change.
  • Sleep issues: insomnia/hypersomnia.
  • Fatigue/loss of energy.
  • Feelings of worthlessness/guilt.
  • Diminished ability to think/concentrate.
  • Suicidal ideation.

Prevalence and Demographic Factors

• Bipolar I Prevalence: 1.5% in US; no significant gender difference (1.6% men, 1.5% women).
• Higher prevalence in: Native Americans; lower in African Americans, Hispanics, Asians.

Age of Onset

• Bipolar I: Onset age ~22 years; early episodes predict recurrent mood episodes.
• Rapid Cycling: 4+ mood episodes within 12 months correlate with poorer outcomes.

Risk Factors and Environmental Influences

• Childhood Trauma: Predictive of early onset.
• Life Stress: Influences depressive relapse and manic episodes.
• Substance Use: Can exacerbate manic symptoms.

Genetic Considerations

• Heritability: Approximately 90%; higher twin concordance (40-70%).
• Lifetime risk: 5-10% in first-degree relatives, indicating a significant genetic factor.

Bipolar II Disorder Overview

• Diagnostic Requirements: At least one hypomanic episode and one major depressive episode; no manic episodes.
• Prevalence: 12-month U.S. prevalence ~0.8%; worldwide ~0.3%.

Course and Characteristics

• Age of Onset: Mid-20s; often starts with depressive episodes.
• Recurrent Episodes: 50% experience new episodes within a year.

Cyclothymic Disorder

• Criteria: 2 years of numerous hypomanic and depressive symptoms without meeting full criteria for episodes.
• Prevalence: 0.4-2.5% in U.S. and Europe, more common in clinical settings among females.

Cognitive Models in Bipolar Disorder

• Beck's Model: Cognitive styles influence mood disorders; negative self-beliefs in depression, overly positive in mania.
• Goal Dysregulation: Overactive behavioral activation system linked to bipolar disorder, impacting goal pursuit.
• Integrative Cognitive Model: Examines how appraisals of mood impact regulation and lead to mood dysregulation.