heterogenous group of inherited disorders characterized by recurring attacks of rapidly progressive flaccid paralysis or myotonia; these conditions have in common a mutation of the gene encoding the alpha subunit of the sodium channel in skeletal muscle; frequently associated with fluctuations in serum potassium levels; periodic paralysis may also occur as a non-familial process secondary to thyrotoxicosis and other conditions.
Excludes
paramyotonia congenita (of von Eulenburg) (359.29)
Also applicable to/known as
Familial periodic paralysis
Hyperkalemic periodic paralysis
Hypokalemic familial periodic paralysis
Hypokalemic periodic paralysis
Potassium sensitive periodic paralysis
ICD-9-CM Volume 2 Index Entries That Refer To 359.3