Neuromuscular Disorders USMLE Step 1 Practice Question
A 59-year-old man with poorly controlled type 2 diabetes mellitus (HbA1c 9.2%) presents with a 1-year history of progressive burning pain and numbness in both feet. Vital signs: BP 148/92, HR 88, RR 16, Temp 37°C, SpO2 98%. Examination reveals decreased pinprick and vibration sensation in stocking distribution bilaterally, normal motor strength, and intact deep tendon reflexes. Nerve conduction studies show slowed velocities. Which of the following is the most likely diagnosis?
Answer choices
- ABell palsy
- BMononeuritis multiplex
- CSpinal muscular atrophy
- DMyasthenia gravis
- EDiabetic distal symmetric polyneuropathyCorrect answer
- FGuillain-Barré syndrome
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