What are the clinical and electrodiagnostic criteria for probable multifocal motor neuropathy (MMN) with conduction block?

Updated: Nov 12, 2018
  • Author: Sasa Zivkovic, MD, PhD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
  • Print
Answer

Probable MMN, as follows:

  • Weakness without objective sensory loss in the distribution of 2 or more nerves

  • The presence of probable motor conduction block in 2 or more motor nerve segments with normal sensory nerve conduction studies

  • Exclusion criteria not present

OR:

  • Weakness without objective sensory loss in the distribution of one nerve

  • The presence of probable motor conduction block in one motor nerve segments with normal sensory nerve conduction studies

  • Exclusion criteria are not present.

  • At least 2 supportive criteria met


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!