Potassium-aggravated myotonia

rare

Potassium-aggravated myotonia (PAM) is a muscular channelopathy presenting with a pure myotonia dramatically aggravated by potassium ingestion, with variable cold sensitivity and no episodic weakness. This group includes three forms: myotonia fluctuans, myotonia permanens, and acetazolamide-responsive myotonia.

Identifiers: MONDO:0018959 OMIM:608390 Orphanet:612
Part of: SCN4A-related channelopathy Hereditary skeletal muscle disorder Myotonic syndrome
Also known as: K+-aggravated myotonia · K-aggravated myotonia · myotonia congenita, atypical, acetazolamide-responsive · PAM · Potassium aggravated myotonia

Subtypes

All diseases Rare only

Disease	ID	Subtypes
Acetazolamide-responsive myotonia	MONDO:0020483
Myotonia fluctuans	MONDO:0020481
Myotonia permanens	MONDO:0020482

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