Andersen cardiodysrhythmic periodic paralysis

An autosomal dominant inherited non-dystrophic myotonia caused by mutations of the SCN4A gene, resulting in sodium muscle channelopathy. Currently, it is considered a variant of hyperkalemic periodic paralysis. Patients with normokalemic periodic paralysis do not have any change in their potassium levels during weakness, but become weak when they ingest potassium.

Disease Alternative Name

normokalemic periodic paralysis

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