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Guillain-Barre syndrome — RACP Paediatrics MCQ

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HardNeurology and neurodevelopmentGuillain-Barre syndromeRACP Paediatrics

A 6-year-old develops leg pain and progressive difficulty walking ten days after gastroenteritis. Examination shows symmetrical lower-limb weakness, absent ankle reflexes and mild facial weakness. Sensation is intact and bladder function is normal. What is the most likely diagnosis?

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Correct answer: D — Guillain-Barre syndrome

Ascending symmetrical weakness with areflexia after infection is typical of Guillain-Barre syndrome. Transverse myelitis would more often have a sensory level and bladder involvement. Respiratory function and autonomic signs must be monitored even when initial weakness appears mild.

Reference: RACP Knowledge Guides; RCH Weakness guideline