Guillain-Barré Syndrome and Spinal Cord Pathology Diagnosis

Primary Differential Diagnoses

The American Academy of Neurology suggests that Guillain-Barré Syndrome (GBS) typically presents with progressive bilateral ascending weakness starting in legs, with areflexia and sensory changes 1, 2
The asymmetric pattern in GBS is atypical but can occur in GBS variants, according to the American College of Physicians 1
Approximately 20% of GBS patients develop respiratory failure requiring urgent monitoring, as recommended by the American Thoracic Society 2
The site of lesion in GBS is typically peripheral nerves, nerve roots (polyradiculoneuropathy), as indicated by the American Academy of Neurology 1
Cauda Equina Syndrome presents with red flag features such as bilateral leg weakness, sensory loss, bladder/bowel dysfunction, and requires urgent MRI spine to exclude compression, according to the American Association of Neurological Surgeons 3
The site of lesion in Cauda Equina Syndrome is lumbosacral nerve roots below L1-L2 level, as described by the European Association of Neurosurgical Societies 4

The American College of Radiology recommends MRI entire spine (cervical, thoracic, lumbar) without and with contrast as the critical first test to evaluate for cord compression, transverse myelitis, nerve root enhancement (GBS) 1
CSF analysis, including cell count, protein, glucose, and oligoclonal bands, is recommended by the American Academy of Neurology to support the diagnosis of GBS 1
Electrodiagnostic studies, such as nerve conduction studies and EMG, are recommended by the American Association of Neuromuscular and Electrodiagnostic Medicine to confirm polyradiculoneuropathy or polyneuropathy pattern 1

The American Academy of Neurology recommends initiating treatment urgently with IVIG 2 g/kg over 5 days or plasmapheresis if GBS is confirmed 1
Respiratory monitoring, including vital capacity and negative inspiratory force measurements, is crucial in GBS patients, as recommended by the American Thoracic Society 1
Dysautonomia monitoring, including blood pressure and heart rate instability, is common in GBS patients, according to the American Autonomic Society 1
Pain management, including muscular, radicular, or neuropathic pain, is frequently reported in GBS patients, as recommended by the American Pain Society 1

The American Academy of Neurology emphasizes the importance of not delaying MRI spine, as spinal cord compression requires urgent surgical intervention 1
The American College of Physicians recommends not waiting for CSF or EMG results to initiate GBS treatment if clinical suspicion is high and imaging excludes structural lesion 1
The American Thoracic Society stresses the importance of monitoring respiratory function closely, as 20% of GBS patients develop respiratory failure 2
The American Association of Neurological Surgeons recommends recognizing spinal shock, as early spinal cord injury may present with areflexia before reflexes become hyperactive 3