Impact of Tourette Syndrome on School Measures in a Nationally Representative Sample

Bedtime Regularity and Sleep Sufficiency in Children With Tourette Syndrome

BACKGROUND

Despite research demonstrating sleep disturbance in children with Tourette syndrome (TS), few studies have examined bedtime regularity and sleep sufficiency, two important sleep health dimensions. Therefore, this study examined bedtime regularity and sleep sufficiency in children with TS relative to matched healthy control subjects, and its associated demographic, clinical, and behavioral factors.

METHODS

Participants were 384 parents or caregivers of children aged three to 17 years, including 192 with current TS and 192 matched healthy control subjects drawn from the 2020-2021 cycle of the National Survey of Children's Health. Parents completed questions assessing demographic (i.e., age, race, sex), clinical (i.e., attention-deficit/hyperactivity disorder [ADHD], autism spectrum disorder, anxiety, depression, tic severity, behavioral or conduct problems, ADHD medication, health condition-related impairment), and behavioral (i.e., screen time) characteristics. Mann-Whitney U test and chi-square test of independence were performed to compare groups on bedtime regularity and sleep sufficiency, respectively. Ordinal regression and binary logistic regression without and with backward elimination were performed to evaluate indicators of bedtime regularity and sleep sufficiency, respectively, in children with TS.

RESULTS

Children with current TS had significantly poorer bedtime regularity, but not sleep sufficiency, relative to matched healthy control subjects. In children with TS, anxiety and two or more hours of daily screen time were associated with higher likelihood of poor bedtime regularity. Autism was associated with lower likelihood of insufficient sleep, and depression was associated with increased likelihood of insufficient sleep.

CONCLUSIONS

Findings put forth screen time, anxiety, and depression as intervention targets to optimize sleep health in children with TS.

Comorbidities and Disease Duration in Tourette Syndrome: Impact on Cognition and Quality of Life of Children

BACKGROUND

Cognitive functions represent foundational factors for mental health and quality of life (QoL). In Tourette syndrome (TS), psychiatric comorbidities are common and have been inconsistently reported to affect the cognition and QoL of patients, while the role of tic disorder duration has not been yet explored.

METHODS

To examine how comorbidities and TS duration may influence cognition and QoL, N = 80 children with TS (6-16 years) were evaluated using the Wechsler Intelligence Scale for Children (WISC-IV). Standardized questionnaires were used to assess the presence and severity of TS main comorbidities and QoL. Data were interpreted using linear correlations, regression, and mediation analysis.

RESULTS

Depression and attention-deficit/hyperactivity disorder (ADHD) symptoms accounted for poorer cognitive performance. Anxiety oppositely predicted better cognitive performance, while no significant role for obsessive compulsive disorder (OCD) was observed. Disease duration was associated with lower total IQ, verbal reasoning, and working memory abilities. Depression, anxiety, and TS duration also deeply influenced QoL measures.

CONCLUSIONS

TS common comorbidities have a differential impact on the cognitive abilities of children and adolescents, which translates into a complex influence on their perceived QoL. A longer clinical history of tics was related to worse cognitive outcomes, which prompts further consideration of disease duration in both clinical and research settings involving children and adolescents.

A scoping review of oral language and social communication abilities in children with Tourette syndrome

BACKGROUND

Children with Tourette syndrome (TS) have historically experienced problems in academic and social settings, yet their language and communication abilities have not been extensively researched.

AIMS

This scoping review maps the literature on the oral language and social communication abilities of children with TS in order to describe the nature of the current literature, present a summary of major findings and identify where gaps exist.

METHODS

A scoping review was completed to identify studies measuring the oral language or social communication abilities of children with TS. A systematic search of six electronic databases was conducted to obtain published and unpublished literature. All English studies measuring the oral language or social communication abilities of children with TS were included. Information was extracted from records and knowledge was synthesised in a narrative summary.

MAIN CONTRIBUTION

We identified 56 records for inclusion. Almost all records were located in journals within the fields of psychology and psychiatry. Skills most often studied were verbal IQ and verbal fluency. The literature suggests an increased prevalence of language disorders and social communication problems in children with TS; however, literature comprehensively detailing these challenges was scarce. Language strengths were identified in verbal intelligence, story/sentence recall, categorisation and performance on tasks at the single-word level.

CONCLUSIONS

Oral language and social communication skills are important for academic and social success. This review brings scattered literature together to provide up-to-date information about language in children with TS and highlights that there are considerable gaps in our knowledge about language and communication in this population. This scoping review can inform future research and support speech language pathologists in the assessment of young people with TS.

WHAT THIS PAPER ADDS

What is already known on the subject Speech-language pathologists (SLPs) working in various contexts (e.g., schools, mental health teams) are likely to encounter children with Tourette syndrome (TS); however, the description of this population and potential communication characteristics is not well represented in the SLP literature. Previous literature reviews have reported strengths in verbal fluency and morphological processing. Challenges in expressive language, higher order language, social cognition and a propensity towards autistic traits have also been identified. What this paper adds to existing knowledge This review differs from previous narrative reviews by employing a systematic approach to searching for literature. As a result, we identified 25 additional studies that had not been cited in previous reviews and additional relevant findings in 23 previously reviewed studies. This review confirms several previous conclusions about language in children with TS and extends or clarifies several others, thereby providing the most current information on oral language and social communication abilities. The use of current taxonomies of language and social communication helps to organise this literature for clinicians and researchers in speech-language pathology and identifies a need for further research from the SLP perspective. What are the potential or actual clinical implications of this work? These results imply that SLPs should screen children with TS for language disorders and investigate social communication and social interaction development. Clinicians can expect greater challenges in language and communication development for children with complex forms of TS (i.e., those who exhibit co-occurring conditions such as attention-deficit/hyperactivity disorder). The multidisciplinary nature of the current literature implies that clinical collaboration with other disciplines will be of particular benefit to serving this group of children.

Teacher Knowledge of Tourette Syndrome and Associated Factors

BACKGROUND

TS is associated with learning disabilities and educational impairment. Teacher knowledge about TS may have a positive impact on students with TS, but factors associated with teacher knowledge of TS are not known.

METHODS

In this cross-sectional study, teachers of youth with TS and of a community control group completed a Teacher Understanding of Tourette Syndrome Survey (TUTS), a pilot questionnaire enquiring about self-perceived understanding, teacher knowledge, and sources of information. We compared TUTS scores between TS and control groups and between those who did and did not use specific sources of information about TS using Wilcoxon rank-sum tests. Bivariate correlation analyses were used to evaluate associations between teacher knowledge and potential contributing factors.

RESULTS

Data from 114 teachers of children with TS and 78 teachers of control subjects were included. Teachers of youth with TS had significantly more knowledge, had higher self-perceived understanding, and used more sources of information than teachers of the control group. Teachers who knew of the Tourette Association of America and who gathered information themselves had higher knowledge about TS than those who did not.

CONCLUSION

Teachers of children with TS know more about TS and use more sources to learn about TS than teachers of children without TS.

A Population-Based Study of the Utility of Screening for Tics and the Relative Contribution of Tics and Psychiatric Comorbidity to Academic and Social Impairment in Adolescents

This study examined the performance of a brief screening tool for tics in adolescents. Academic and social impairment in students by tic screen status and emotional/behavioral problem status were examined. Data were collected as part of an epidemiologic study, the Project to Learn about Youth - Mental Health. Participants were 2,312 secondary school students at the Ohio site (47.4% female; 94.4% non-Hispanic white) and their teachers. Students completed 6 items from the Motor tic, Obsessions and compulsions, Vocal tic Evaluation Survey (MOVES-6) and the Strengths and Difficulties Questionnaire (SDQ). Teachers completed the Proxy Report Questionnaire for tics and SDQ. Based on responses to the MOVES-6, 11.1% of students screened positive for tics. Internal consistency was adequate (α = 0.76); inter-rater consistency between teachers and students was low (0.03). Based on student self-report, those who screened positive for tics self-reported more academic and social impairment than students who screened negative for tics; teacher-report of impairment was similar between those with a positive or negative tic screen. Students who screened positive for tics and reported internalizing difficulties reported more academic and social impairment than students with only a positive tic screen. Teachers perceived those screening positive for tics and externalizing difficulties as the most socially impaired. In conclusion, a positive self-reported tic screen was associated with self-reported academic and social impairment. Findings reveal the independent contribution of tics to impairment, even when internalizing and externalizing problems are present, and the potential utility of a school-based screening for tics in adolescents.

TikTok Tourette's: Are We Witnessing a Rise in Functional Tic-Like Behavior Driven by Adolescent Social Media Use?

Perceptions of Tourette syndrome (TS) and tic disorders are often driven by social media. During the COVID-19 pandemic, social media consumption greatly increased, particularly in the adolescent population. In parallel with increased social media consumption, there has also been an increase in tic severity and functional tic-like behavior (FTLB). Given that many of the tic videos posted on social media are misleading, perpetuate false beliefs about TS, or reinforce tic-like behaviors, there is increasing concern that these videos are driving the rapid increase in FTLBs. Several studies have reviewed newly presenting cases of FTLB and have found shared characteristics, including that a higher proportion of affected individuals are female, there is a low proportion with a history of childhood or family tics, and symptom onset is typically acute and develops in the teenage years. In addition, the quality of the tics seen in association with FTLB mirrors many of the tics seen on popular social media channels, with higher rates of coprophenomena, tic attacks, and involvement of the trunk and extremities than is seen with typical tics. FTLBs are likely a specific subgroup of functional tics largely influenced by the portrayal of and growing popularity of functional tics posted on social media during the COVID-19 pandemic. However, several factors, including increased anxiety, social isolation, and social media use in general during the pandemic are likely also contributing factors to the surge of FTLBs seen recently. In this era of increased social media consumption, it will become increasingly important for clinicians to educate patients about where and how medical information is spread, to ensure the best possible diagnosis, treatment, and outcomes for patients.

Assessing the educational needs of physicians in the management of patients with Tourette syndrome: results of a United States survey on practicing clinicians and caregivers

Objective

To better understand current practices of U.S.-based physicians in the management of Tourette syndrome (TS) and identify gaps that may be addressed by future education.

Methods

Two survey instruments were developed to gather data on management of TS and perceptions from physicians and caregivers of children with TS. The clinician survey was developed in consultation with a TS physician expert and utilized clinical vignettes to assess and quantify practice patterns. The caregiver survey was adapted from the clinician survey and other published studies and gathered details on diagnosis, treatment, and perceptions regarding management.

Results

Data included responses from 138 neurologists (including 57 pediatric neurologists), 162 psychiatrists (including 42 pediatric psychiatrists), and 67 caregivers. Most (65%) pediatric neurologists rely solely on clinical findings to make a diagnosis, whereas the majority of other specialists utilize additional testing (eg, neuroimaging, lab testing, and genetics). Most psychiatrists (96%) utilize standardized criteria to make a diagnosis, whereas 22% of neurologists do not. Many physicians (44% of psychiatrists and 20% of neurologists) use pharmacotherapy to treat a patient with “slightly bothersome” tics and no functional impairment, whereas caregivers favored behavioral therapy. Most (76%) caregivers preferred to make the final treatment decision, whereas 80% of physicians preferred equal or physician-directed decision-making.

Conclusions

This study provides insight into practice patterns and perceptions of U.S.-based neurologists and psychiatrists in managing TS. Results highlight the potential value of physician education, including diagnostic approach, tic management and monitoring, involvement of caregivers in decision-making, and updates on TS management.

Academic, Interpersonal, Recreational, and Family Impairment in Children with Tourette Syndrome and Attention-Deficit/Hyperactivity Disorder

This study describes impairment in academic, interpersonal, recreational, and family financial or occupational domains across children in three mutually exclusive diagnostic groups: ever diagnosed with Tourette syndrome (TS), attention-deficit/hyperactivity disorder (ADHD), and both disorders. In 2014, parents reported on impairment and diagnostic status of children aged 4-17 years (n = 3014). Weighted analysis and pairwise t-tests showed more children with ADHD (with or without TS) experienced impairment in overall school performance, writing, and mathematics, relative to children with TS but not ADHD. More children with TS and ADHD had problematic handwriting relative to children with ADHD but not TS. More children with TS and ADHD had problematic interpersonal relationships relative to those with ADHD but not TS. Children with TS and ADHD had higher mean impairment across domains than children with either TS or ADHD. Findings suggest assessing disorder-specific contributions to impairment could inform targeted interventions for TS and ADHD.

Bullying Victimization and Perpetration Among US Children with and Without Tourette Syndrome

OBJECTIVE

Tourette syndrome (TS) and co-occurring mental, behavioral, and developmental disorders (MBDDs) have been shown to affect peer relationships. This study provides nationally representative estimates of diagnosed TS prevalence and the prevalence of parent-reported bullying victimization and perpetration among US children with and without TS.

METHODS

This study included 2016-2017 National Survey of Children's Health data on children aged 6 to 17 years (N = 51,001) with parent-reported responses about TS diagnosis and their child's experiences with bullying victimization and perpetration. We calculated weighted prevalence estimates of diagnosed TS and of bullying indicators among children ever diagnosed with TS compared with peers without TS. We conducted a logistic regression analysis to estimate adjusted prevalence ratios of bullying involvement by TS status, controlling for age, sex, and co-occurring MBDDs.

RESULTS

By parent report, 0.3% of US children had ever received a diagnosis of TS; most children with a TS diagnosis (83.2%) had a co-occurring MBDD. Among children with TS, 56.1% experienced bullying victimization, 20.7% experienced bullying perpetration, and 15.9% experienced both, compared with 21.6%, 6.0%, and 4.1% for children without TS, respectively. After adjusting for age, sex, and co-occurring MBDDs, only the association between TS and bullying victimization remained statistically significant.

CONCLUSION

Compared with children without TS, children with TS overall experience more bullying victimization and perpetration. Health care professionals treating children with TS could assess challenges with peer relationships and co-occurring disorders to provide targeted support and referral.

European clinical guidelines for Tourette syndrome and other tic disorders-version 2.0. Part I: assessment

In 2011 a working group of the European Society for the Study of Tourette Syndrome (ESSTS) has developed the first European assessment guidelines for Tourette syndrome (TS). Now, we present an updated version 2.0 of these European clinical guidelines for Tourette syndrome and other tic disorders, part I: assessment. Therefore, the available literature has been thoroughly screened, supplemented with national guidelines across countries and discussions among ESSTS experts. Diagnostic changes between DSM-IV and DSM-5 classifications were taken into account and new information has been added regarding differential diagnoses, with an emphasis on functional movement disorders in both children and adults. Further, recommendations regarding rating scales to evaluate tics, comorbidities, and neuropsychological status are provided. Finally, results from a recently performed survey among ESSTS members on assessment in TS are described. We acknowledge that the Yale Global Tic Severity Scale (YGTSS) is still the gold standard for assessing tics. Recommendations are provided for scales for the assessment of tics and psychiatric comorbidities in patients with TS not only in routine clinical practice, but also in the context of clinical research. Furthermore, assessments supporting the differential diagnosis process are given as well as tests to analyse cognitive abilities, emotional functions and motor skills.

The Obsessive-Compulsive Symptoms in Tic Disorders and the Psychometric Properties of Children's Yale-Brown Obsessive-Compulsive Scale: An Evidence-Based Survey in a Chinese Sample

OBJECTIVE

Patients with tic disorders (TDs) usually also have obsessive-compulsive disorder (OCD). The severity of obsessive-compulsive symptoms (OCSs) in TD is widely evaluated using the Children's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS). However, there is no survey on the severity of OCSs in patients with TD based on a Chinese sample, and the reliability and validity of the CY-BOCS in patients with TD have not been well established in China. This study examined the severity of OCSs in TDs and the psychometric properties of the CY-BOCS in Chinese pediatric patients with TD.

METHODS

A total of 367 patients who were diagnosed with TD [152 with Tourette syndrome (TS)] were enrolled in the Department of Psychiatry at Beijing Children's Hospital in China. The mean age of the patients was 9.21 ± 2.06 years (range: 5-16 years). The Yale Global Tic Severity Scale (YGTSS) and CY-BOCS were used as screening tools. The psychometric properties of the CY-BOCS were assessed using Cronbach's alpha, test-retest reliability, and construct validity.

RESULTS

The OCSs in TDs were 3.93 ± 5.15 based on the CY-BOCS in the whole sample. The older adolescent group showed higher scores than the young adolescent groups (Z = -3.37, p = 0.001). However, the young adolescent group showed a higher incidence rate of OCSs than the older adolescent group (p < 0.01). Men with TDs also showed a higher incidence rate of OCSs than women (p = 0.03). The reliability and validity analyses of the CY-BOCS showed Cronbach's alpha and test-retest reliability values of 0.81 and 0.82, respectively. The CY-BOCS showed an acceptable level in the two-factor structure (obsession and compulsive) in patients with TD. The comparative fit index (CFI) was 0.84 for TD, 0.86 for Tourette, 0.94 for the younger adolescent group, and 0.74 for the older adolescent group.

CONCLUSION

More OCSs were identified in the TS group and the older adolescent group with TDs. The CY-BOCS showed good psychometric properties in children and adolescents with TD, especially in younger patients with TD. OCSs might be associated with age and functional impairment of TD.

Living with tics: Nursing Care of Pediatric Tourette Syndrome

Tourette syndrome (TS) is a neurodevelopmental movement characterized by abrupt, rapid, repetitive, and non-rhythmic tics. While TS is not life-threatening, such tics and comorbidities affect a children's physical and mental health and social interactions. Treatment is necessary when the children experience physical discomfort, functional dysfunction, and poor interpersonal interaction and mental health. Common management strategies for TS include psychological interventions and pharmacological treatment. Additionally, it is important to consider the individual needs of youths with TS and reassess the treatment outcomes and the need to receive continuous treatment regularly. This review summarizes the symptom management and nursing care measures for youths with TS. Understanding and listening to the healthcare problems of youths with TS can help providers develop healthcare interventions tailored to the youths' needs. Providing the youths with strategies to reduce the tics' interference with their learning outcomes and helping them develop strategies to cope with diverse interpersonal interactions at school are also important. Further, enhancing acceptance given by parents, teachers, and peers, as well as improving the general public's understanding of TS are important measures that promote the youths' social adjustment as well as their ability to coexist with TS.

Impaired School Functioning in Children With Chronic Pain: A National Perspective

OBJECTIVE

The purpose of this study was to determine the association between presence of chronic pain and school functioning among school-aged children (6 to 17 y) using the most recent United States national data.

MATERIALS AND METHODS

Secondary data analyses of the 2016-2017 National Survey of Children's Health. Parents (n=48,254) reported on whether their child had chronic pain over the past 12 months. Parents also reported on school functioning including (1) engagement with school, (2) number of school days missed, (3) problems at school, (4) repeating a grade, and (5) diagnosis of a learning disability. Children with chronic pain were compared with children without chronic pain using multivariate logistic regression models. We also stratified analysis according to age and sex.

RESULTS

In multivariate analyses, children with pain were more likely to have low school engagement (adjusted odds ratio [OR]: 1.4, 95% confidence interval [CI]: 1.0-1.9), be chronically absent (OR: 4.2, 95% CI: 3.0-5.8), have school-related problems (OR: 1.9, 95% CI: 1.5-2.3), repeat a grade (OR: 1.4, 95% CI: 1.0-2.0), and be diagnosed with a learning disability (OR: 1.6, 95% CI: 1.1-2.5). In stratified analyses, associations between chronic pain and school measures were strongest among adolescents (15 to 17 y of age) and males.

DISCUSSION

This study extends evidence linking chronic pain status to poorer school functioning in a large, national sample. Poor school functioning is a pressing public concern affecting children with chronic pain. Health care providers, educators, policymakers, and families should work together to ensure that needs are met for this vulnerable population.

Association of Headache With School Functioning Among Children and Adolescents in the United States

This cross-sectional study examines the association between headache in children and school functioning in the US.

Clinical development of valbenazine for tics associated with Tourette syndrome

Introduction: Significant need exists for effective, well-tolerated pharmacologic treatments for Tourette syndrome (TS). Medications that inhibit vesicular monoamine transporters (i.e. VMAT2 inhibitors) downregulate presynaptic packaging and release of dopamine into the neuronal synapse and are effective in treating hyperkinetic movement disorders such as Huntington's chorea and tardive dyskinesia (TD); thus, they may be useful in treating TS.Areas covered: This review describes the clinical program evaluating the safety and efficacy of valbenazine in the treatment of involuntary tics associated with TS in adult and pediatric subjects. While there was a trend in the 6 completed trials toward greater improvement in valbenazine-treated versus placebo subjects on the primary efficacy endpoint (Yale Global Tic Severity Scale Total Tic Score), this difference did not reach statistical significance. Valbenazine was generally well-tolerated in the studies, and treatment-emergent adverse events were consistent with valbenazine studies in TD.Expert opinion: Due to the failure to meet the primary endpoint in these trials, further investigation of valbenazine for TS is unlikely. Given the need for safe and effective TS therapies and the key role of VMAT2 in modulating dopaminergic activity, it is reasonable for future studies to investigate other VMAT2 inhibitors as potential treatments for TS.

Clinical features and neuropsychiatric comorbidities in pediatric patients with tic disorders: a retrospective chart review study from South Korea

BACKGROUND

Tic disorders are childhood-onset neuropsychiatric disorders characterized by multiple motor or vocal tics with frequent comorbidities and a broad spectrum of phenotypic presentations. In this study, we aimed to investigate the clinical characteristics and comorbid neuropsychiatric conditions in pediatric patients with tic disorders.

METHODS

We retrospectively reviewed the medical records of 119 pediatric patients (89 males, 30 females) who were diagnosed with tic disorders according to the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) at Uijeongbu St. Mary's Hospital, Republic of Korea, between January 2012 and July 2019.

RESULTS

The mean age of tic onset was 6.9 years (range, 1-14) and the mean age at diagnosis was 8 years (range, 1-17). The mean lag between tic onset and diagnosis was 13.3 months (range, 0.25-132). The most common, first-presenting tics were eye blinking (50.4%), followed by jaw or lip movement (29.4%) and throat clearing (29.4%). Thirty-seven (31.1%) patients had at least one co-occurring neuropsychiatric disorder at the time of tic diagnosis. Subtypes of tic disorders, types of initial tics, and presence of neuropsychiatric comorbidities were not associated with tic severity. Tic severity was associated with greater functional impairment and tic noticeability (p < 0.05). A relatively shorter time to diagnosis was associated with tic severity (Spearman's ρ = - 0.14, p = 0.11).

CONCLUSIONS

The evolving nature of tic expression and severity, high prevalence of neuropsychiatric comorbidities, and associated functional impairments emphasize the importance of comprehensive assessment during the disease course for determining and prioritizing goals of treatment.

Handwriting skills of children with tic disorders

INTRODUCTION

Although circumstantial evidence suggests children with tic disorders (TD) experience challenges in handwriting which may be attributed to their tics, few studies have systematically investigated handwriting performance among children with TD. This study examined the relationship between handwriting deficits and TD using a causal comparative research design.

METHODS

Thirty-four children with TD completed the Test of Handwriting Skills-Revised (THS-R). The overall percentile ranks of the THS-R were analysed to determine if children with TD have lower scores compared to the test's normative values. Writing speed, letter reversals, touching letters and case errors were also evaluated.

RESULTS

Data revealed the median percentile rank of the THS-R for the participants was significantly lower than the median percentile score of the THS-R for the normative sample. Close to 80% (n = 27) of writing samples were scored below 50th percentile. More than one-third (35.3%, n = 12) of the writing samples were scored greater than one standard deviation below the normative mean on the THS-R. Of the four ancillary scores, 82.4% (n = 28) of the participants' writing samples scored below 50th percentile (in the categories of watch or test further) on case errors and 67.6% (n = 23) scored below 50th percentile on writing speed.

CONCLUSION

Findings suggested that children with TD took longer to complete the writing task, and committed more case substitution errors than the normative sample of the THS-R and were likely to exhibit handwriting deficits.

A Review of the Current Treatment of Tourette Syndrome

Tourette syndrome is a hyperkinetic movement disorder that presents before age 18 years and involves motor and phonic tics that may present with a wide range of severity. The severity and presentation of tics in an individual may fluctuate over time. Tourette syndrome may affect social relationships and school attendance, and may result in depression. Comorbidities are common, with attention-deficit/hyperactivity disorder and obsessive-compulsive disorder being most common. The literature supporting optimal treatment is limited but provides a framework for clinical decision-making. The focus of this review is to discuss the symptoms and possible causes of Tourette syndrome and current non-pharmacologic and pharmacologic treatment options, to help practitioners optimize care for pediatric patients with this disease.

Children from nuclear families with bad parental relationship could develop tic symptoms

BACKGROUND

Studies have reported the impact of chronic childhood and adolescent tic disorder (TD) on families. However, few researches focused on the relationship between family environment and diagnosis of TD. We aim to assess the influence of couple relationship and family structure on the onset of TD.

METHODS

A total of 660 parents of patients with TD (aged 6-12 years) and 641 parents of controls completed questionnaires. Couple relationship and family structure were selected by regression of binary logistic analysis as the risk factors. Couple relationship was divided into the harmonious, common, hostile, and divorced. Family structure included unconventional family, nuclear family, and unite family. Multivariate correspondence analysis was designed to explore relationships among categorical variables of couple relationship and family structure.

RESULTS

There were significant associations between TD and couple relationship (Exp B = 1.310, p = .006, 95% CI = 1.080-1.590), family structure (Exp B = 0.668, p = .001, 95% CI = 0.526 ~ 0.847), gender (Exp B = 0.194, p < .001, 95% CI = 0.149-0.254), respectively. Obviously contradicted and common couple relationships were risk factors for TD compared with the harmonious and divorced. Children form unconventional family or nuclear family were prone to develop TD. Interestingly, divorced parents had the same protective effect as harmonious parents. The OR value could increase with the number and level of those risk factors.

CONCLUSIONS

In conclusion, children from nuclear families with bad parental relationship could be more likely to develop tic symptoms. The family intervention of children with TD should focus on family structure and parental relationship.

Tourette syndrome research highlights from 2018

This is the fifth yearly article in the Tourette Syndrome Research Highlights series, summarizing research from 2018 relevant to Tourette syndrome and other tic disorders. The authors briefly summarize reports they consider most important or interesting. The  highlights from 2019 article is being drafted on the Authorea online authoring platform, and readers are encouraged to add references or give feedback on our selections using the comments feature on that page. After the calendar year ends, the article is submitted as the annual update for the  Tics collection on F1000Research.

Children with Tourette Syndrome in the United States: Parent-Reported Diagnosis, Co-Occurring Disorders, Severity, and Influence of Activities on Tics

OBJECTIVE

Describe the diagnostic process for Tourette syndrome (TS) based on parent report, as well as TS severity and associated impairment; the influence of common daily activities on tics; and the presence of co-occurring mental, behavioral, and developmental disorders among children in the United States.

METHODS

Parent-report data from the 2014 National Survey of the Diagnosis and Treatment of ADHD and Tourette Syndrome on 115 children ever diagnosed with TS were analyzed. Descriptive, unweighted analyses included frequencies and percentages, and means and standard deviations. Fisher's exact test and t-tests were calculated to determine statistically significant differences.

RESULTS

The mean age that tics were first noticed was 6.3 years, and, on average, TS was diagnosed at 7.7 years. The time from initially noticing tics to TS diagnosis averaged 1.7 years. The mean age when TS symptoms were most severe was 9.3 years. Tic severity was associated with impaired child functioning but not tic noticeability. Almost 70% of parents reported that fatigue and major transitions made their child's tics worse. Children with ever-diagnosed TS had a mean of 3.2 ever-diagnosed co-occurring mental, behavioral, or developmental disorders; a quarter (26.9%) had 5 or more co-occurring disorders.

DISCUSSION

In this sample of children with TS, the time to diagnosis averaged less than 2 years from when tics were initially noticed. More severe TS was associated with greater functional impairment, and co-occurring disorders were common among children with TS. This study provides insight into the current experiences of children with TS in the United States and their families.