[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. ( CSP )]
UMLS (CSP) C0030443 Relation/PAR: inborn metal metabolism disorder
muscle disorder
DISORDERS OF THE PERIPHERAL NERVOUS SYSTEM
Relation/CHD: Paralysis, Hyperkalemic Periodic
Hypokalemic Periodic Paralysis