Bipolar Disorder: Manic Episodes

Bipolar Disorder: Manic Episodes

Bipolar Disorder: Manic Episodes

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Manic Episode: Definition & Epidemiology - The Mania Machine

  • Definition: Abnormally & persistently elevated, expansive, or irritable mood AND persistently ↑ goal-directed activity/energy.
  • Duration:1 week (or any duration if hospitalization needed).
  • Impact: Marked social/occupational impairment, hospitalization to prevent harm, or psychotic features.
  • Exclusion: Not due to substance/another medical condition.
  • Epidemiology (Bipolar I Disorder):
    • Lifetime Prevalence: ~1%.
    • Age of Onset: Late adolescence/early adulthood (mean ~18-20 yrs).
    • Sex Ratio (Bipolar I): M:F ≈ 1:1.
    • Risk: Strong genetic link (family Hx).

⭐ Manic symptoms lasting <1 week still count if hospitalization occurs.

Manic Episode: Clinical Features - DIG FAST Frenzy

  • Mood: Abnormally elevated, expansive, or irritable.
  • Energy/Activity: Persistently ↑, goal-directed.
  • Duration: ≥ 1 week (or any if hospitalized).
  • Impairment: Marked social/occupational dysfunction, hospitalization, or psychotic features.
  • Exclusion: Not due to substance/medical condition.
  • 📌 DIG FAST (≥3 symptoms; ≥4 if mood only irritable):
    • Distractibility: Poor attention, easily sidetracked.
    • Impulsivity: Reckless behavior (spending, sex, investments).
    • Grandiosity: Inflated self-esteem, special abilities.
    • Flight of ideas: Racing thoughts, rapid speech, topic shifts.
    • Activity ↑: Psychomotor agitation, increased goal-directed actions.
    • Sleep ↓: Decreased need (e.g., 3 hrs), feels energetic.
    • Talkativeness: Pressured speech, very talkative.

⭐ Flight of ideas and a significantly decreased need for sleep (e.g., feeling rested on only 3 hours) are hallmark, frequently tested symptoms.

DIG FAST mnemonic for manic episodes

Manic Episode: Diagnosis & DDx - Pinpointing the Peak

  • Diagnosis:
    • Clinical: History (patient & informant), Mental Status Exam (MSE).
    • DSM-5: Elevated/irritable mood + ≥3 (or 4 if mood only irritable) DIGFAST symptoms for ≥1 week (or any duration if hospitalized), causing marked impairment.
      • 📌 DIG FAST: Distractibility, Indiscretion, Grandiosity, Flight of ideas, Activity ↑, Sleep ↓, Talkativeness ↑.
    • Severity: Young Mania Rating Scale (YMRS).
  • Investigations (R/O organic/comorbid):
    • Labs: CBC, LFT, KFT, TFT, glucose.
    • Specific: Urine toxicology, VDRL, HIV, B12/Folate.
    • Neuroimaging (CT/MRI): First episode, late onset, atypical, neuro signs.
    • EEG: If seizures.
  • Differential Diagnosis (DDx):
    • Psychiatric: Schizophrenia, Schizoaffective, ADHD, Substance-induced mania, Borderline PD.
    • Medical: Hyperthyroidism, Cushing's, CNS lesions/infections, Medications (steroids, L-Dopa).

    ⭐ A single manic episode is sufficient for a diagnosis of Bipolar I Disorder.

Manic Episode: Management - Calming the Chaos

1. Acute Phase: Rapid Stabilization

  • Goal: Control agitation, psychosis; ensure safety; low-stimulus environment.
  • Pharmacotherapy (Severe Agitation):
    • IM Antipsychotic: Olanzapine (5-10mg), Haloperidol (5-10mg).
    • Adjunct IM Lorazepam (2-4mg).
  • Pharmacotherapy (Oral Options):
    • Atypicals: Risperidone, Olanzapine.
    • Valproate (load 20-30mg/kg), Lithium (acute 0.8-1.2 mEq/L).
  • ECT: Treatment-resistant, severe mania, catatonia, pregnancy.

2. Maintenance Phase: Relapse Prevention

  • Goal: Sustain euthymia.
  • Mood Stabilizers:
    • Lithium (0.6-1.0 mEq/L). 📌 LMNOP: Lithium, Movement, Nephro, HypOthyroid, Pregnancy.
    • Valproate (50-125 µg/mL).
    • Lamotrigine (slow titration, SJS risk).
  • Atypical Antipsychotics: Olanzapine, Risperidone LAI.
  • Psychosocial: Psychoeducation, CBT.

⭐ Lithium is highly effective for preventing manic relapses and reducing suicide risk in Bipolar Disorder.

High‑Yield Points - ⚡ Biggest Takeaways

  • Manic Episode: Elevated/irritable mood & ↑ energy/activity for ≥1 week (or hospitalization).
  • ≥3 DIGFAST symptoms (Distractibility, Indiscretion, Grandiosity, Flight of ideas, Activity ↑, Sleep ↓, Talkativeness).
  • Bipolar I Dx: Min. one manic episode.
  • First-line: Mood stabilizers (Lithium, Valproate) or atypical antipsychotics.
  • Severe mania/psychosis: Consider ECT or combination therapy.
  • Rule out substance/medical causes of mania.
  • Rapid cycling: ≥4 mood episodes in 1 year.

Practice Questions: Bipolar Disorder: Manic Episodes

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Drug of choice for prophylaxis of mania is:

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Drug of choice for prophylaxis of mania is:

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