The Supplement That Masked the Deficiency - Hematology clinical simulation case. Maya El-Sayed, a 44-year-old marketing executive, sits on the examination...
Age: 45 • Setting: Outpatient Consultation
Clinical Presentation & History
Maya El-Sayed, a 44-year-old marketing executive, sits on the examination chair. She appears alert but mildly anxious, with occasional hesitations mid-sentence. Her husband drove her in and adds quietly from the chair beside her: 'She keeps forgetting the ends of sentences.'
Differential Diagnoses to Consider
Primary differential diagnoses evaluated in this clinical scenario:
Vitamin B12 (Cobalamin) Deficiency with Subacute Combined Degeneration
Multiple Sclerosis (Demyelinating Myelopathy)
Chronic Mercury or Heavy Metal Toxicity
Cerebellar Ataxia from Alcohol-Related Neuropathy
High-Yield Clinical Pearls
Maintain a systematic approach from history taking to definitive intervention.
Diagnostic stewardship minimizes patient harm and diagnostic delay.
Diagnostic Pitfalls & Cognitive Error Warnings
Key reasoning traps and premature closure risks associated with this presentation:
Premature closure without complete investigation carries high diagnostic error risk.
Test Your Clinical Reasoning in Real Time
Step into the active clinician role for this case. Order diagnostic tests, analyze live laboratory panels, and navigate branching clinical decisions with real-time feedback.