So far, seven main disorders result from the channelopathy of Nav1.4; Myotonia, para-myotonia congenita, hypokalemic periodic paralysis, hyperkalemic periodic paralysis, normokalemic periodic paralysis, congenital myasthenia, and congenital myopathy with hypotonia (Cannon and Bean, 2010). This evidence concerns the gene SCN4A and periodic paralysis.