A patient develops sudden vision loss after a traumatic event. Eye examination is normal, and the patient is unconcerned about blindness. What is the most likely diagnosis?

1. A

   Somatoform Disorder

2. B

   Conversion Disorder

3. C

   Factitious Disorder

4. D

   Malingering

Appeared in: INI-CET EXAM -2025

Explanation

• Conversion Disorder (Functional Neurological Symptom Disorder) involves one or more symptoms of altered voluntary motor or sensory function (e.g., blindness, paralysis, seizures).
• The clinical findings provide evidence of incompatibility between the symptom and recognized neurological or medical conditions; in this case, a normal eye examination despite reported blindness.
• The symptoms often appear after a stressful or traumatic event, linking a psychological stressor to a physical symptom.
• A key associated feature is 'la belle indifférence,' an inappropriate lack of concern for the severity of the symptom, which is present in this patient.

Why Other Options Were Wrong

• Option A: Somatoform Disorder (now primarily termed Somatic Symptom Disorder) is characterized by excessive thoughts, feelings, or behaviors related to somatic symptoms. The patient in the scenario is unconcerned, which is the opposite of the high anxiety typical of this disorder.
• Option C: Factitious Disorder involves the intentional falsification of symptoms with the primary motivation of assuming the sick role. While the symptoms are not real, the key clue here ('la belle indifférence') points more specifically to an unconscious process (Conversion) rather than a conscious desire for medical attention.
• Option D: Malingering is the intentional production of false or grossly exaggerated physical or psychological symptoms, motivated by external incentives (secondary gain), such as avoiding military duty, obtaining financial compensation, or evading criminal prosecution. No external incentive is mentioned in the scenario.

Related Visual

• Visual 1: Flowchart: A flowchart differentiating Conversion Disorder, Somatic Symptom Disorder, Factitious Disorder, and Malingering based on two key questions: 1) Are the symptoms intentionally produced? and 2) What is the motivation (internal vs. external)?
• Visual 2: Infographic: An infographic illustrating the common symptoms of Conversion Disorder, such as sensory loss (blindness, anesthesia), motor symptoms (paralysis, abnormal gait), and pseudo-seizures.

Clinical Relevance

• Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Differentiating between Conversion Disorder and other somatic symptom and related disorders in acute care settings.
• Nurses must first advocate for a thorough medical evaluation to definitively rule out any organic cause for the symptoms. A diagnosis of Conversion Disorder is one of exclusion.
• The nursing approach should be supportive and non-judgmental. Focus on the patient's feelings and the stressor, rather than on the physical symptom itself. Avoid reinforcing the symptom by providing special attention for it.
• What if the patient was highly anxious and distressed about their blindness? If the patient was excessively worried and preoccupied with the symptom, Somatic Symptom Disorder would become a more likely diagnosis than Conversion Disorder.

How to Approach the Question

• First, analyze the clinical vignette for key information: the symptom (sudden vision loss), the trigger (traumatic event), objective findings (normal eye exam), and the patient's emotional response (unconcerned).
• The patient's attitude is the most crucial clue. 'Unconcerned about blindness' is a classic description of 'la belle indifférence'.
• Recall the definitions of the four options. Conversion Disorder is specifically associated with neurological symptoms and 'la belle indifférence'.
• Evaluate the other options. Somatoform/Somatic Symptom Disorder involves high anxiety, not indifference. Factitious Disorder and Malingering involve intentional deception for internal (sick role) or external (money, avoidance) gain, respectively, which are not suggested here.
• Select the diagnosis that best fits all the elements of the scenario, with the patient's lack of concern being the strongest pointer towards Conversion Disorder.

Concept Tested & Keywords

• Concept Tested: Differentiating between Conversion Disorder and other somatic symptom and related disorders.
• Stem keywords: sudden vision loss, traumatic event, eye examination normal, unconcerned about blindness
• Lead-in keywords: most likely diagnosis
• Clinical cues: The patient's lack of concern ('la belle indifférence') is a classic, though not universal, sign pointing specifically to Conversion Disorder.

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QCVtMZv81Nabj9jIylPcl4

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