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Difficulty: MediumAnxiety, OCD, and Trauma-Related Disorders

A 33-year-old female paramedic presents to the occupational health clinic reporting severe insomnia, emotional numbness, and being constantly "on edge" for the past 6 months. She states her symptoms began after she responded to a mass casualty incident. She reports recurrent, distressing nightmares about the scene and goes out of her way to avoid driving near the location of the incident. Her medical history includes bipolar II disorder, for which she stopped taking medication three years ago, and a recent skin infection for which she is currently taking linezolid. Laboratory results show a TSH of 1.5 mU/L (Normal: 0.4-4.0) and a free T4 of 0.6 ng/dL (Normal: 0.8-1.8). She requests medication to help her sleep and improve her mood. Her father, who drove her to the clinic, approaches the physician in the hallway and asks for an update on her condition because he is worried about her recent anger outbursts. Which of the following is the most appropriate next step in management?

  1. Refer the patient for trauma-focused cognitive-behavioral therapyAnswer
  2. B
    Initiate paroxetine monotherapy to target both depressive and anxiety symptoms
  3. C
    Prescribe venlafaxine while continuing the current course of linezolid
  4. D
    Discuss the patient's condition with her father to ensure a safe home environment
  5. E
    Diagnose primary hypothyroidism and initiate levothyroxine therapy

Answer

Refer the patient for trauma-focused cognitive-behavioral therapy
The correct answer is referring the patient for trauma-focused cognitive-behavioral therapy. This patient meets the DSM-5 criteria for Post-Traumatic Stress Disorder (PTSD), characterized by intrusive symptoms, avoidance behavior, negative mood alterations, and hyperarousal lasting more than one month following a traumatic event. Both trauma-focused CBT and serotonergic antidepressants (SSRIs/SNRIs) are first-line treatments for PTSD. However, this patient has two major contraindications to serotonergic medications: she has unmedicated bipolar II disorder (which places her at high risk for an antidepressant-induced hypomanic switch) and she is taking linezolid. Linezolid has monoamine oxidase inhibitor (MAOI) activity, and combining it with an SSRI or SNRI can precipitate life-threatening serotonin syndrome. Therefore, trauma-focused CBT is the safest and most appropriate evidence-based intervention.

Step-by-Step Solution

1
Diagnose the primary psychiatric condition based on the clinical presentation.
The patient has Post-Traumatic Stress Disorder (PTSD).
She has exposure to a severe trauma, followed by >1 month of intrusive symptoms (nightmares), avoidance, emotional numbness, and hyperarousal (insomnia, anger).
2
Evaluate the patient's medical history for contraindications to standard pharmacotherapy.
The patient has unmedicated bipolar II disorder and is taking linezolid.
Standard first-line pharmacotherapy for PTSD includes SSRIs and SNRIs. However, SSRI/SNRI monotherapy can induce hypomania in bipolar patients. Additionally, linezolid is a weak MAOI, and combining it with serotonergic agents risks serotonin syndrome.
3
Select the safest and most effective first-line treatment.
Trauma-focused cognitive-behavioral therapy (CBT) is selected.
CBT is a highly effective, first-line evidence-based treatment for PTSD that completely avoids the severe pharmacologic risks present in this patient.

Key Concept

First-line management of PTSD involves trauma-focused psychotherapy or pharmacotherapy (SSRIs/SNRIs), but psychotherapy is strongly preferred when significant pharmacologic contraindications (e.g., unmedicated bipolar disorder, concurrent MAOI use) exist.
Estimated Time:1m 30s
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Topics

Anxiety, OCD, and Trauma-Related Disorders

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