8C71.3 Drug-induced myotonia

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

Drug-induced myotonia refers to the myotonia-inducing effects of certain drugs. Hypocholesterolaemic agents may induce myotonia by altering the sterol composition of the muscle cell membrane, while other drugs including beta-adrenergic blockers and agonists, succinylcholine and diuretics may exacerbate or unmask pre-existing myotonia.

exclusions

• Myasthenia gravis or certain specified neuromuscular junction disorders  (8C60-8C6Z)
• Secondary myopathies  (8C80-8C8Z)

postcoordination

synonyms

• Drug-induced myotonia
• medicament-induced myotonia
• drug myotonia

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