Myotonia

Under myotonia (from Greek μυός myos, genitive to μῦς mys, muscle ' and τόνος tonos, tension ') are different muscle Erkankungen summarizes the pathologically prolonged by a tonic muscle contraction distinguished.

The electrical activity of muscles in the measured electromyogram (EMG) shows a typical pattern with a plurality of sharp discharges periodically increasing - decreasing amplitude. In the EMG speakers it comes to typical acoustic phenomena (often described as a dive bomber - noise).

• Myotonic dystrophy type 1 ( Steinert - Batten Curschmann syndrome)
• Myotonic dystrophy type 2 ( proximal myotonic myopathy, short PROMM )
• Myotonia congenita Thomsen ( Thomsen 's disease)
• Becker myotonia congenita ( recessive generalized myotonia )
• Paramyotonia congenita Eulenburg