Tic disorders are heterogeneous, with symptoms varying widely both within and across patients. Exploration of symptom clusters may aid in the identification of symptom dimensions of empirical and treatment import. This article presents the results of two studies investigating tic symptom clusters using a sample of 99 youth (M age = 10.7, 81% male, 77% Caucasian) diagnosed with a primary tic dis...

background: obsessive-compulsive disorder (ocd) symptoms and the related disorders are subsumed under chronic psychiatric disorders which are of psychosocial and therapeutic importance. in most studies, the mean age of onset of significant ocd symptoms is adolescence period. the aim of this study was to evaluate ocd symptoms, tic disorder, body dysmorphic disorder (bdd) and trichotilomania amon...

This study provides a focused review of issues that are relevant to the nosology of the tic disorders and presents preliminary recommendations to be considered for DSM-V. The recommended changes are designed to clarify and simplify the diagnostic criteria, reduce the use of the residual category, tic disorder not otherwise specified, and are not intended to alter substantially clinical practice...

The United States Food and Drug Administration currently states that the use of stimulants in patients with tic disorders and/or family history of tic disorders including Tourette's syndrome is contraindicated. Patients with attention deficit hyperactivity disorder (ADHD), however, are at increased risk of tics regardless of stimulants use. After evaluating the most recent literature on the inc...

OBJECTIVE This study aimed to investigate comorbidity, and sociodemographic and clinical characteristics in children and adolescents with Tourette's syndrome (TS) and chronic motor or vocal tic disorder (CMVTD), and to determine the predictors of tic disorders. MATERIALS AND METHODS In all, 57 children and adolescents with TS and CMVTD were compared with a control group. Data were obtained us...

BACKGROUND The prevalence of tic disorders in children varies from 1% to 29% depending on the characteristics of the study population, the diagnostic criteria, and the study design and methods. AIMS To calculate the prevalence of tic disorders among primary school children in Italy. METHODS The study population comprised 2347 primary school children from the city of Pavia (pop. 80 073), Nor...

Increased attention has been paid to tic disorders clinically, yet relatively few studies have probed potential factors that account for the occurrence of tic disorders in the general population. In this study, we used data derived from the Taiwan's National Health Insurance Research Database to examine an array of factors related to the diagnosis of tic disorders and to further probe gender he...