Cerebrospinal fluid shunt-induced chorea: case report and review of the literature on shunt-related movement disorders.

To cite: de Gusmäo CM, Berkowitz AL, Hung AY, et al. Pract Neurol 2015;15:42–44. INTRODUCTION Cerebrospinal fluid (CSF) diversion by shunting provides effective management of hydrocephalus. However, complication rates of CSF shunts range from 5% to 50%. Most common are shunt infections and mechanical failures; these may lead either to underdrainage (with re-emergence of hydrocephalus) or overdrainage (with intracranial hypotension and its potential complications, eg, subdural hematoma). 4 Misplacement and migration of shunt catheters may cause seizures, intracerebral haemorrhage, and/ or focal neurologic deficits, such as hemiparesis. 2 We report a case of hemichorea after CSF shunt placement, and review the literature on CSF shunt-related movement disorders.