Guillain-Barré Syndrome and Seizures: Understanding the Connection

Guillain-Barré syndrome (GBS) is an acute inflammatory demyelinating polyneuropathy. Seizures are not a typical feature but can occur in severe/complicated cases.

Core GBS Features

• Ascending symmetric weakness, areflexia
• Albuminocytologic dissociation (high CSF protein, normal cells)
• Autonomic instability (BP lability, arrhythmia)
• Respiratory failure (~25–30% need ventilation)

When Seizures Occur

• Severe autonomic dysfunction → hypertensive encephalopathy.
• Electrolyte disturbances (hyponatremia from SIADH).
• Coexisting critical illness (sepsis, metabolic derangements).
• Medication toxicity.
• Rare: CNS variant (Bickerstaff brainstem encephalitis) overlaps with GBS.

Management

• IVIG or plasma exchange (first-line)
• ICU monitoring for autonomic/respiratory failure
• Seizure treatment: benzodiazepines, levetiracetam; avoid encephalopathic agents.

Seizures in GBS signal complication, not primary pathology. Prompt recognition improves outcomes.