Exp Neurobiol.  2016 Jun;25(3):143-145. 10.5607/en.2016.25.3.143.

Bilateral Adduction Palsy in a Patient with Myotonic Dystrophy Type 1

Affiliations
  • 1Department of Neurology, Jeju National University School of Medicine, Jeju 63241, Korea. neurokang@jejunu.ac.kr

Abstract

Myotonic dystrophy type 1 (DM1) is caused by CTG repeat expansion in the DMPK gene in chromosome 19q13.3. External ophthalmoplegia is a rare manifestation in DM1. We report a DM1 patient confirmed by the presence of 650 CTG triplet expansions in the DMPK gene and had limitation of adduction gaze bilaterally. Brain MRI showed bilateral medial rectus muscles atrophy. Our patient provides additional evidence of ocular motor muscle involvement in DM1.

Keyword

Atrophy; MRI; Myotonia; Myotonic dystrophy; Ophthalmoplegia

MeSH Terms

Atrophy
Brain
Humans
Magnetic Resonance Imaging
Muscles
Myotonia
Myotonic Dystrophy*
Ophthalmoplegia
Paralysis*
Triplets
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