Tools for screening asymptomatic hypokalaemic periodic paralysis

Spanish clinicians conducted a clinical, imaging and electrophysiological study on a cohort of patients with hypokalaemic periodic paralysis from the same region and carrying the same CACNAS1 gene mutation (p.R528).

  • This study involved 8 symptomatic men, 3 asymptomatic women and 9 healthy volunteers.
  • It redefines the diagnostic criteria for hypokalaemic periodic paralysis linked to the p.R528 mutation.
  • Its results demonstrate the usefulness of muscle MRI and electrophysiological stress tests (long exercise) for screening, including in asymptomatic individuals.

 

Redefining periodic paralysis with CACNA1S mutation in a Spanish cohort. Carbonell-Corvillo P, Rivas E, Cabrera M et al. Neurologia (Engl Ed). 2025 Sep;40(7):630-640.