Sensory Tricks Suppress Position-Sensitive Dystonic Head Tremor in Wilson’s Disease

Sensory tricks (ST) are classic features of primary dystonia, reflecting abnormal sensorimotor integration. Although ST have been documented in various secondary movement disorders, and dystonia itself is the most frequent movement phenomenon in Wilson’s disease (WD), the presence of dramatic and effective ST has rarely been emphasized in this acquired metabolic disorder. We present a video case of genetically confirmed WD in which a persistent, position-sensitive dystonic head tremor was strikingly alleviated by distinct ST, highlighting this underreported yet instructive phenomenon. A 24-year-old man with genetically confirmed WD presented with a disabling head tremor that was minimal at rest but exacerbated dramatically upon standing and walking. Notably, the tremor was markedly suppressed during ambulation by either light touch to the posterior neck or active head turn, with immediate rebound upon cessation. This case provides compelling video evidence that reproducible ST can be a prominent feature in WD, expanding the phenotypic spectrum of neurological WD and suggesting shared pathophysiological mechanisms across primary and secondary dystonias.