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Catatonia in Down syndrome; a treatable cause of regression

Authors Ghaziuddin N, Nassiri A, Miles J

Received 10 November 2014

Accepted for publication 27 January 2015

Published 2 April 2015 Volume 2015:11 Pages 941—949

DOI https://doi.org/10.2147/NDT.S77307

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Dr Roger Pinder

Neera Ghaziuddin,1 Armin Nassiri,2 Judith H Miles3

1Department of Psychiatry, University of Michigan, Ann Arbor, Michigan, 2Community Psychiatry, San Jose, California, 3Thompson Center for Autism and Neurodevelopmental Disorders and Department of Child Health, University of Missouri, Columbia, Missouri, USA

Objective: The main aim of this case series report is to alert physicians to the occurrence of catatonia in Down syndrome (DS). A second aim is to stimulate the study of regression in DS and of catatonia. A subset of individuals with DS is noted to experience unexplained regression in behavior, mood, activities of daily living, motor activities, and intellectual functioning during adolescence or young adulthood. Depression, early onset Alzheimer’s, or just “the Down syndrome” are often blamed after general medical causes have been ruled out. Clinicians are generally unaware that catatonia, which can cause these symptoms, may occur in DS.
Study design: Four DS adolescents who experienced regression are reported. Laboratory tests intended to rule out causes of motor and cognitive regression were within normal limits. Based on the presence of multiple motor disturbances (slowing and/or increased motor activity, grimacing, posturing), the individuals were diagnosed with unspecified catatonia and treated with anti-catatonic treatments (benzodiazepines and electroconvulsive therapy [ECT]).
Results: All four cases were treated with a benzodiazepine combined with ECT and recovered their baseline functioning.
Conclusion: We suspect catatonia is a common cause of unexplained deterioration in adolescents and young adults with DS. Moreover, pediatricians and others who care for individuals with DS are generally unfamiliar with the catatonia diagnosis outside schizophrenia, resulting in misdiagnosis and years of morbidity. Alerting physicians to catatonia in DS is essential to prompt diagnosis, appropriate treatment, and identification of the frequency and course of this disorder.

Keywords: electroconvulsive therapy, benzodiazepines, adolescence, young adulthood

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