Linda:

I also have a problem with weakness sometimes when it gets hot.

I have one of the more recent studies bookmarked on my computer but I'm not at home right now. However, if you go to scholar.google.come and type in "myotonia congenita" and weakness, you should pull a lot of studies up. I recommend using the date filer to the left of the page and limiting your results to no older than the year 2000 because in the older studies they did not have genetic testing and could not always distinguish the different myotonic disorders from one another by symptoms.

Type of Myotonia: Becker

Country: USA