Myotonia congenita is a disorder that affects muscles used for movement. Beginning in childhood people with this condition experience bouts of sustained muscle tensing (myotonia) that prevents ...

Diagnosis Recessive myotonia congenita (Becker's disease). Management Explanation of the nature of the disease and treatment with mexiletine 200 mg twice daily. A 56-year-old woman with a history ...

Dystrophic myotonia Type II may appear between middle age. There is also a condition called paramyotonia congenita which appears before the age of 10. The rarity of this condition is fortunate.

And they didn’t actually faint. These goats have a hereditary condition called myotonia congenita. This is an inherited disorder that can occur in people as well and affects skeletal muscles.