Psychopharmacology for Trauma-Related Disorders

Psychopharmacology for Trauma-Related Disorders

Psychopharmacology for Trauma-Related Disorders

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  • Primarily addresses Post-Traumatic Stress Disorder (PTSD); also Acute Stress Disorder (ASD) & Adjustment Disorders.
  • Goals of pharmacotherapy:
    • Reduce core PTSD symptoms (intrusions, avoidance, negative alterations in cognition/mood, hyperarousal).
    • Improve daily functioning & quality of life.
    • Manage comorbid conditions (e.g., depression, anxiety, substance use).
  • First-Line Treatments: Selective Serotonin Reuptake Inhibitors (SSRIs) & Serotonin-Norepinephrine Reuptake Inhibitors (SNRIs).
    • SSRIs: Preferred initial agents.
      • Sertraline: 50-200 mg/day (FDA approved).
      • Paroxetine: 20-60 mg/day (FDA approved).
      • Fluoxetine: 20-60 mg/day.
    • SNRIs:
      • Venlafaxine XR: 75-300 mg/day. Effective for overall symptom reduction.
  • Duration: Continue for 6-12 months post-remission; longer for recurrent illness.

⭐ Prazosin (alpha-1 adrenergic antagonist) is effective for nightmares and sleep disturbances in PTSD. Typical dose: Start 1 mg, titrate up to 2-15 mg at bedtime based on response and tolerability (monitor for hypotension).

  • Prazosin: Alpha-1 adrenergic antagonist. Primary for PTSD nightmares.
    • Mechanism: ↓ Central noradrenergic hyperactivity during REM sleep, reducing nightmare intensity/frequency.
    • Dose: Start 1 mg HS. Titrate slowly (by 1-2 mg q few days) to 2-15 mg (max 20 mg).
    • Monitor: BP (first-dose orthostatic hypotension). First dose at bedtime.
    • 📌 Mnemonic: "Prazo-SIN stops nightmares SINister."
  • Cyproheptadine: 5-HT2A antagonist, antihistaminic.
    • Alternative for nightmares. Dose: 4-12 mg HS.
  • Trazodone: SARI.
    • For PTSD-related insomnia; may also reduce nightmares. Dose: 50-200 mg HS.
  • Atypical Antipsychotics (Adjunctive, low dose):
    • E.g., Risperidone, Olanzapine, Quetiapine.
    • For severe, refractory nightmares or comorbid psychotic symptoms.

⭐ Prazosin is specifically recommended for PTSD-associated nightmares and sleep disruption due to its targeted action on noradrenergic hyperreactivity.

  • Steer Clear:
    • ⚠️ Benzodiazepines (BZDs): Generally avoid for PTSD.
      • Risks: Dependence, disinhibition, ↓ coping, worsens trauma processing, interferes with therapy.
      • Use: Short-term (days) ONLY for acute, severe agitation if no alternative.
  • Strategize (Pharmacotherapy Pathway):
    • First-line: SSRIs (Sertraline 50-200 mg/day, Paroxetine 20-60 mg/day).
      • Start low, titrate slow. Minimum 4-6 weeks trial.
    • Second-line: SNRIs (Venlafaxine XR 75-225 mg/day). If SSRI fails/partial response.
    • Nightmares/Sleep: Prazosin (alpha-1 antagonist) 1-15 mg HS. Monitor hypotension.
    • Augmentation (Severe/Resistant): Atypical antipsychotics (e.g., Risperidone) low dose.
    • Avoid monotherapy: TCAs, MAOIs (side effects). Bupropion may worsen anxiety.

⭐ Sertraline and Paroxetine are FDA-approved first-line pharmacotherapies for PTSD.

High‑Yield Points - ⚡ Biggest Takeaways

  • SSRIs (Sertraline, Paroxetine) are first-line for PTSD due to efficacy and tolerability.
  • Prazosin is specifically used for nightmares and sleep disturbances in PTSD.
  • Benzodiazepines are not recommended for PTSD; risk of dependence and symptom worsening.
  • SNRIs (Venlafaxine) are a second-line option if SSRIs are ineffective or not tolerated.
  • Atypical antipsychotics may be used as adjuncts for severe, refractory PTSD symptoms.
  • Avoid monotherapy with anxiolytics for core PTSD symptoms_._

Practice Questions: Psychopharmacology for Trauma-Related Disorders

Test your understanding with these related questions

A 32-year-old man comes to the physician complaining of excessive sleepiness for the past several months. He reports falling asleep while dealing with customers and had a near accident when he fell asleep while driving. The patient reports that he occasionally hears voices while falling asleep and finds himself "temporarily frozen" and unable to move upon awakening. Which of the following is the most appropriate treatment for this patient?

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Flashcards: Psychopharmacology for Trauma-Related Disorders

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Hypervigilance, angry outbursts and exaggerated startle response are all alterations in _____ seen in post-traumatic stress disorder

TAP TO REVEAL ANSWER

Hypervigilance, angry outbursts and exaggerated startle response are all alterations in _____ seen in post-traumatic stress disorder

arousal

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