8C71.0
Myotonic dystrophy
Distrofia miotônica
CategoryDefinition
Myotonic dystrophy is a group of inherited muscular disorders. It is the most common form of muscular dystrophy that begins in adulthood. Myotonic dystrophy is characterised by progressive muscle wasting and weakness, and prolonged muscle contractions (myotonia) that are not able to relax after use. Other signs and symptoms of myotonic dystrophy include slurred speech or temporary locking of their jaw, cataracts and cardiac conduction defects. In affected men, hormonal changes may lead to early balding and infertility. The clinical severity varies widely among affected patients, even among members of the same family.
Exclusions
- Myasthenia gravis or certain specified neuromuscular junction disorders
- Secondary myopathies
Index Terms
Myotonic dystrophymyotonia atrophicaDM - [dystrophia myotonica]dystrophia myotonicamyotonia dystrophicamyotonic muscular dystrophyMyotonic dystrophy type 1DM1 - [Myotonic dystrophy type 1]Steinert diseaseSteinert myotonic dystrophy syndromeSteinert syndromeCongenital myotonic dystrophyCDM - (congenital myotonic dystrophy)Juvenile to adult onset myotonic dystrophyMyotonic dystrophy type 2PROMM - [proximal myotonic myopathy]