An introduction to the myotonias

Myotonia refers to a condition in which muscles are slow to relax after contracting. This is a characteristic of a number of conditions, including:

  • myotonic dystrophy
  • myotonia congenita
  • paramyotonia congenita

As myotonic dystrophy is a distinct condition of which myotonia is only a part there is a separate area on this website about it (see the Myotonic dystrophy home page). The other two conditions are covered here, as myotonia is the main and often the only symptom.

Read the full introduction