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l�ll Clinical characteristics of Tourette syndrome Kano Y; Ohta M; Nagai YPsychiatry Clin Neurosci 1998[Feb]; 52 (1): 51-7The aim of the present study was to examine the clinical characteristics of Tourette syndrome (TS) in terms of symptomatology, outcome and organic and genetic factors, and to compare these with results of previous studies on TS in Western countries and in Japan, on the basis of precise information taken from a large number of TS patients under psychiatric treatment in Japan. There was a total of 64 TS patients (55 males and nine females) selected from those who visited our outpatient clinic from 1974 to 1993 and were found to meet the criteria for Tourette's disorder of DSM-III-R. The mean patient age at entry to the present study was 17.4 years (SD: 7.2). All data were collected through a systematic chart review of subjects, including data on tic symptoms and the course of their development; complications and developmental histories; family histories; medical and psychological examinations; treatment; severity and outcome. A check of the data showed that the mean age at onset was 6.9 years (SD: 2.7). An analysis of the progression of the symptoms revealed that 'generalized tics' afflicting the entire body were found in 64.1% of subjects and coprolalia was found in 50%. The main complications were obsessive-compulsive symptoms (OCS) in 62.5% of patients and attention deficit hyperactivity disorder (ADHD) in 17.2%. Of their parents, 7.0% had tic disorders except TS and 1.6% had TS. Contrary to results from previous studies of TS, our study revealed that at least the incidence of coprolalia in TS patients in Japan is not lower than in Western countries. However, the frequency of familial cases seemed to be lower than previously reported for Western patients. Outcome was fairly related with 'generalized tics,' OCS, aggressiveness and ADHD.|Adolescent[MESH]|Adult[MESH]|Attention Deficit Disorder with Hyperactivity/diagnosis/epidemiology/genetics[MESH]|Child[MESH]|Cross-Cultural Comparison[MESH]|Cross-Sectional Studies[MESH]|Female[MESH]|Follow-Up Studies[MESH]|Humans[MESH]|Incidence[MESH]|Japan/epidemiology[MESH]|Male[MESH]|Neurologic Examination[MESH]|Obsessive-Compulsive Disorder/diagnosis/epidemiology/genetics[MESH]|Risk Factors[MESH]|Tourette Syndrome/*diagnosis/epidemiology/genetics[MESH]|Verbal Behavior[MESH] |