Abstract
Genetically proven myotonic dystrophy type 2 (DM2) was found in a 61-year-old woman with creatine kinase (CK) elevation and only isolated weakness of one triceps. There was no clinical or electrical myotonia. Electromyography (EMG) showed only scattered fibrillation potentials and short duration motor unit potentials. Muscle biopsy showed nonspecific myopathic features and highly atrophic fibers with nuclear clumps. DM2 should be considered in patients with focal proximal weakness and abnormal EMG without myotonic discharges.
Original language | English (US) |
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Pages (from-to) | 383-385 |
Number of pages | 3 |
Journal | Muscle and Nerve |
Volume | 39 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2009 |
Keywords
- Focal weakness
- Myotonia
- Myotonic dystrophy type 2
ASJC Scopus subject areas
- Physiology
- Clinical Neurology
- Cellular and Molecular Neuroscience
- Physiology (medical)