CACNA1A and Vertigo: Although classically characterized by paroxysmal ataxia, <i>CACNA1A</i>-related disorders are increasingly recognized as an age-dependent phenotypic continuum that extends beyond episodic cerebellar dysfunction to include fluctuating weakness, persistent neurological signs, and neurodevelopmental impairments.<h4>Case report</h4>A 12-year-old boy presented with episodic vertigo.