A 48-year-old man is brought to the physician by his wife for a 2-week history of personality change and increasing confusion. He has no significant past medical history. Vitals are within normal limits. Complete blood count shows no abnormalities. Enzyme analysis is normal. He works in a factory that produces rifles. His hobbies include gardening. A photograph of the patient’s nails is shown.
This patient’s presentation is most likely due to toxicity of which of the following?
Arsenic
Beryllium
Iron
Lead
Organophosphate
2,4-dinitrophenol
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Cut-to-the-chase Answer (0:36):
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HY USMLE Answer (6:34):
