Neuroleptic Malignant Syndrome: Severe Hyperthermia Treated with Endovascular Cooling

We report a patient with neuroleptic malignant syndrome who presented with the characteristic features of altered mental state, hyperthermia, haemodynamic dysregulation, elevated creatine kinase and subsequently increased muscle rigidity. The hyperthermia was refractory to standard cooling techniques and dantrolene but was rapidly corrected using an endovascular cooling device. He recovered from this life-threatening condition but required ongoing renal replacement support following discharge from the intensive care unit.