Endocrine and Reproductive Disorders · USMLE Step 1

A diabetic patient presents with numbness in both feet. What is the most likely mechanism?

  1. Segmental demyelination
  2. Sorbitol accumulation in nerves
  3. Acetylcholine receptor antibodies
  4. Hypocalcemia
Show answer and explanation

Correct answer: Sorbitol accumulation in nerves

Chronic hyperglycemia leads to sorbitol accumulation in Schwann cells, causing neuropathy. This results in distal symmetric polyneuropathy.

Difficulty: Medium Question 15 of 20

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