Yale Global Tic Severity Scale Explained

Yale Global Tic Severity Scale
Purpose:	assess tics

The Yale Global Tic Severity Scale (YGTSS) is a psychological measure designed to assess the severity and frequency of symptoms of disorders such as tic disorder, Tourette syndrome, and obsessive-compulsive disorder, in children and adolescents between ages 6 and 17.^{[1] [2]}

The questionnaire is divided into three parts over the span of 17 pages: one section identifies symptoms of motor and phonic tics, severity, and age of onset. Another section concerns OCD symptoms, severity, and age of onset, and the last section concerns environmental effects on symptoms. The YGTSS is completed by the parent and takes approximately 15–20 minutes. The questionnaire has shown good reliability and validity in assessing tic severity in recent studies.

Further reading

• Tanya K. . Murphy . Adam B. . Lewin . Eric A. . Storch . Saundra . Stock . American Academy of Child and Adolescent Psychiatry (AACAP) Committee on Quality Issues (CQI) . December 2013 . Practice Parameter for the Assessment and Treatment of Children and Adolescents With Tic Disorders . Journal of the American Academy of Child & Adolescent Psychiatry . 52 . 12 . 1341–1359 . 10.1016/j.jaac.2013.09.015 . 24290467 . free .
• Daniel A. . Geller . John . March . AACAP Committee on Quality Issues (CQI) . January 2012 . Practice Parameter for the Assessment and Treatment of Children and Adolescents With Obsessive-Compulsive Disorder . Journal of the American Academy of Child & Adolescent Psychiatry . 51 . 1 . 98–113 . 10.1016/j.jaac.2011.09.019 . free . 22176943.

Notes and References

1. Martino D, Pringsheim TM, Cavanna AE, et al . Systematic review of severity scales and screening instruments for tics: Critique and recommendations . Mov. Disord. . 32 . 3 . 467–473 . March 2017 . 28071825 . 5482361 . 10.1002/mds.26891 . Review.
2. Sukhodolsky DG, Gladstone TR, Kaushal SA, Piasecka JB, Leckman JF (2017). "Tics and Tourette Syndrome". In Matson JL (ed.). Handbook of Childhood Psychopathology and Developmental Disabilities Treatment. Autism and Child Psychopathology Series. p. 248.