Jeffrey Dungan

All articles by Jeffrey Dungan

Myotonic Dystrophy

Myotonic Dystrophy, Type 1 1. What every clinician should know Clinical features and incidence Myotonic dystrophy (dystrophia myotonia, commonly abbreviated DM) is an inherited disorder affecting multiple organ systems. The cardinal features are muscle weakness (especially facial, mouth, throat and distal muscle groups) and myotonia (inability to relax contracted muscles). Muscle pain and stiffness are…

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