Is there cure for myotonia congenita?

No- but new types: Myotonia congenita used to be divided into either thomson or becker's disease. It now appears that there are over 80 mutations in the chloride channel gene or a sodium channel gene that contribute to a diagnosis of typical or atypical myotonia congenita. Identifying the particular gene mutation will lead to better personalized treatment options.

No: This is a hereditary condition, of autosomal dominance (thomsen disease), or autosomal recessive (becker disease), and in most cases, medical treatment is un-necessary.