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Keywords:

  • multifocal motor neuropathy;
  • muscle hypertrophy;
  • botulinum toxin

Abstract

Multifocal motor neuropathy is frequently an asymmetrical neuropathy predominantly affecting the upper limbs. Patients present with weakness, fasciculations and distal muscle wasting. Hypertrophy of muscles is very infrequently reported. We present two cases of multifocal motor neuropathy with upper limb muscle hypertrophy and discuss possible pathophysiological mechanisms. Botulinum toxin may be useful to alleviate cramp.