Combined central and peripheral myelinopathy

Area of Science:

• Neurology
• Neuroimmunology
• Demyelinating Diseases

Background:

• Multiple sclerosis (MS) is a central nervous system demyelinating disease.
• Peripheral neuropathy in MS is typically subclinical, with rare reports of clinical manifestation.
• Combined central and peripheral demyelinating diseases are exceptionally rare.

Observation:

• Two male patients presented with severe clinical evidence of both central and peripheral demyelination.
• Electrophysiologic studies and nerve biopsies confirmed significant demyelinating processes in both central and peripheral nervous systems.
• These findings suggest a potential overlap between MS and peripheral demyelinating neuropathy.

Findings:

• The patients exhibited severe, chronic, and clinically evident peripheral demyelinating neuropathy alongside central demyelinating disease.
• This presentation could represent rare cases of MS with severe peripheral neuropathy.
• Alternatively, it might indicate a distinct form of combined central-peripheral myelinopathy or a coincidental occurrence.

Implications:

• These cases highlight the spectrum of demyelinating diseases and the potential for peripheral nervous system involvement in MS.
• Further research is needed to understand the pathogenesis and classification of such combined central-peripheral myelinopathies.
• Recognition of these rare presentations is crucial for accurate diagnosis and patient management.