Which clinical history findings are characteristic of Charcot-Marie-Tooth type 1B (CMT1B)?

Updated: May 22, 2018
  • Author: Timothy C Parsons, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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Some features of different subtypes that deviate from the standard history given above are listed below.


Rather than presenting with a classical Charcot-Marie-Tooth phenotype, patients seem to manifest signs and symptoms according to 1 of 2 phenotypes: either prior to walking or around age 40. [41]

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