Myotonia Congenita

Myotonia congenita is a hereditary pathogenic condition affecting skeletal muscle ion channels and is characterized by a delay of relaxation ot the skeletal muscles following an electical or mechanical stimulus or after cessation of voluntary activity. Myotonia congenita results from genetic defects in the skeletal muscle chloride ion channel and the ensuing reduced chloride ion conductance across the sarcolemma. Myotonic Miniature Schnauzers have hypertrophic skeletal muscles, difficulty in rising after a period of rest, a stiff and stilted gait when walking, and a bunnyhop type movement when running. In addition, there are increased respiratory sounds, difficulty when swalling, ptyalism, dental abnormalities and superior prognathism.

Possible Test Results :

• Clear
• Carrier
• Affected
• Hereditary Clear
• Hereditary Carrier
• Hereditary Affected