Case Report: Diagnostic overshadowing in a patient with major depressive symptoms later diagnosed with systemic amyloidosis - Scorecard - MDSpire
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Case Study: Misdiagnosis Due to Overlapping Symptoms in a Patient with Major Depression Subsequently Found to Have Systemic Amyloidosis

  • By

  • Yuexi Liang

  • Wei Li

  • Lanying Liu

  • August 12, 2026

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Clinical Scorecard: Case Study: Misdiagnosis Due to Overlapping Symptoms in a Patient with Major Depression Subsequently Found to Have Systemic Amyloidosis

At a Glance

CategoryDetail
ConditionSystemic Amyloidosis
Key MechanismsExtracellular accumulation of misfolded fibrillar proteins affecting multiple systems, primarily the heart.
Target PopulationAdults with overlapping symptoms of depression and systemic diseases.
Care SettingPsychiatric outpatient clinic

Key Highlights

  • Initial presentation of major depressive episode masked underlying systemic amyloidosis.
  • Cardiac involvement is the primary cause of morbidity and mortality in systemic amyloidosis.
  • Diagnostic overshadowing can lead to misattribution of physical symptoms to psychiatric disorders.
  • Interdisciplinary awareness is crucial to mitigate diagnostic delays.
  • Symptoms of systemic amyloidosis can be non-specific and resemble those of depression.

Guideline-Based Recommendations

Diagnosis

  • Consider systemic causes in patients presenting with depressive symptoms and unexplained physical complaints.
  • Utilize comprehensive diagnostic evaluations when psychiatric symptoms are present.

Management

  • Reassess treatment plans when patients exhibit persistent hypotension and syncope despite psychiatric interventions.

Monitoring & Follow-up

  • Monitor for signs of cardiac dysfunction in patients with unexplained hypotension and syncope.

Risks

  • Delayed diagnosis of systemic amyloidosis due to cognitive biases and fragmented care.

Patient & Prescribing Data

57-year-old male with major depressive episode and systemic symptoms.

Initial treatment with duloxetine and olanzapine did not improve mood or address hypotensive symptoms.

Clinical Best Practices

  • Maintain a high index of suspicion for systemic diseases in patients with psychiatric symptoms.
  • Encourage interdisciplinary collaboration to enhance diagnostic accuracy.

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