RT Journal Article SR Electronic T1 Rhabdomyolysis secondary to severe tic fits JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e239874 DO 10.1136/bcr-2020-239874 VO 14 IS 3 A1 Ka Loong Kelvin Au A1 Shannon Chiu A1 Irene A Malaty YR 2021 UL http://casereports.bmj.com/content/14/3/e239874.abstract AB Tourette syndrome (TS) is a condition wherein motor and vocal tics occur, provoked by an urge, but often not able to be completely voluntarily controlled. Tics are known to cause physical and emotional risks to quality of life, and in rare extreme cases, may have permanent consequences. We report the first cases, to our knowledge, of rhabdomyolysis due to extreme tic fits in two distinct patients with TS. Both patients presented with severe tics, leading to elevated creatine kinase and a diagnosis of rhabdomyolysis requiring hospitalisation and intravenous fluids. Neither had neuroleptic malignant syndrome. One patient was on concurrent neuroleptic therapy, but his laboratory parameters improved when tics subsided despite continued neuroleptic use. Our cases highlight the potential complication of rhabdomyolysis secondary to severe tic fits independent of neuroleptic use.