Diabetic Amyotrophy — SCE Neurology MCQ

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ModeratePeripheral Neuropathy & NeuromuscularDiabetic AmyotrophySCE Neurology

A 45-year-old diabetic man presents with sudden severe right thigh pain, followed by quadriceps weakness and wasting. Right knee reflex is absent. NCS confirm femoral neuropathy/lumbar plexopathy. What is the diagnosis?

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Correct answer: C — Diabetic amyotrophy

Diabetic amyotrophy (lumbosacral radiculoplexus neuropathy) is immune-mediated microvasculitis causing acute severe pain followed by proximal weakness. It is self-limiting but recovery takes months. A: DSPN is distal and symmetric. C: Disc herniation would show on imaging. D: Meralgia paraesthetica is purely sensory. E: IBM is gradual and painless.

Reference: EAN Diabetic Neuropathy Guidelines