An Uncommon Presentation of Guillain-Barré Syndrome With Lhermitte Sign.

Guillain-Barré syndrome (GBS) is a complex and potentially life-threatening disease, representing the most common cause of acute neuromuscular paralysis worldwide. Its diagnosis is primarily based on clinical findings, often complemented by electrophysiological studies and laboratory investigations. Therefore, knowledge of the clinical signs and symptoms is essential to make a prompt diagnosis and allow timely initiation of therapeutic interventions.