ICD-11 classes
09 Diseases of the visual system
Strabismus or ocular motility disorders
Diseases of neuromuscular junction or muscle
Primary disorders of muscles
8C71 — Myotonic disorders
8C71.3 — Drug-induced myotonia
ICD-11 8C71.3 — Drug-induced myotonia
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.
The diagnosis includes nothing.
It excludes 2 items.
- Myasthenia gravis or certain specified neuromuscular junction disorders (8C60-8C6Z)
- Secondary myopathies (8C80-8C8Z)
It has no clarifying diagnoses.
The diagnosis is coded elsewhere:
- Myotonic disorders #7465