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Is it a tic or Tourette's? Clues for differentiating simple from more complex tic disorders.

Tics are characterized by sterotyped, purposeless, and irregularly repetitive movements and usually can be classified as chronic motor or vocal tic disorders, transient tic disorders, or Tourette's syndrome. The latter is a complex disorder associated with multiple tics and often accompanied by other conditions, such as ADHD and obsessive-compulsive disorder. Treatment can be difficult, and drug therapy should begin with agents least likely to cause problems for the patient. Education of the patient and family and support from the physician and other care providers are essential elements of effective management.

Child↗

[Compulsive phenomena in children with tic disorder and attention deficit-hyperactive disorder].

Tic disorders (TD), obsessive-compulsive disorders (OCD) and attention-deficit/hyperactivity disorder (ADHD) are often associated with deficits of impulse control and aggressive behavior. Tic disorders and OCD are closely related on epidemiological, psychopathological and neurobiological levels, whereas ADHD and OCD phenomena seem to be at opposite poles. Research evidence on the clinical significance of associated obsessive-compulsive behavior is reviewed and linked to our own new data. Thus the analyses of a worldwide database on Tourette's Syndrome (TS) (N = 4,833) showed that that the associated symptomatology of the OCD spectrum has to emphasized. In further investigations, premonitory sensorimotor phenomena reminiscent of OCD were more frequent in children with tic disorders as they grew older. Obsessive-compulsive behavior concomitant with TS was particularly associated with impulsive and aggressive behavior, as well as with depression and anxiety. The data suggest a reduced serotonergic transmission. Self-reports by children with ADHD, as opposed to those by their parents, mentioned a significantly higher quantitative degree of OC phenomena than those by children with TS. These findings suggest that OC symptoms in children with ADHD have so far been neglected in assessments by others. In summary, a complex psychopathological pattern of tic, OC behavior, impulsivity and internalizing symptomatology emerges that requires discriminating assessment and treatment.

Adolescent↗

Recognition and management of Tourette's syndrome and tic disorders.

Tic disorders and Tourette's syndrome are conditions that primary care physicians are likely to encounter. Up to 20 percent of children have at least a transient tic disorder at some point. Once believed to be rare, Tourette's syndrome is now known to be a more common disorder that represents the most complex and severe manifestation of the spectrum of tic disorders. Tourette's syndrome is a chronic familial disorder with a fluctuating course; the long-term outcome is generally favorable. Although the exact underlying pathology has yet to be determined, evidence indicates a disorder localized to the frontal-subcortical neural pathways. Tourette's syndrome is commonly associated with attention-deficit/hyperactivity disorder, obsessive-compulsive disorder, behavior problems and learning disabilities. These comorbid conditions make the management of Tourette's syndrome more challenging. Management of Tourette's syndrome should include timely and accurate diagnosis, education, and behavior or pharmacologic interventions. Use of neuroleptic medications and dopamine D2 antagonist drugs can be effective but may be associated with significant side effects.

Diagnosis, Differential↗

Neuropsychologic characteristics of children with attention-deficit hyperactivity disorder (ADHD), learning disorder, and tic disorder on the Rey-Osterreith Complex Figure.

This study examined the performance of Korean children diagnosed with attention-deficit hyperactivity disorder (ADHD), learning disorder, ADHD with learning disorder, and tic disorder on the Rey-Osterreith Complex Figure. The clinical group consisted of 57 children between the ages of 6 and 13 years (15 with ADHD, 13 with learning disorder, 15 with ADHD + learning disorder, and 15 with tic disorder), and the control group included 20 children recruited from an elementary school. Rey-Osterreith Complex Figure productions were scored according to the Developmental Scoring System. The children in the control group showed a clear developmental trend--organization score increasing with age--that was similar to the performance of American children. No such age-related effect was found in the three clinical groups. The organization scores of the children with ADHD were lower than those of other groups, suggesting an organizational deficit in ADHD. Performance on the immediate recall condition was poorest in the tic disorder and ADHD + learning disorder groups, suggesting the presence of nonverbal memory problems in those groups.

Adolescent↗

[Tic disorders].

Tics are sudden, rapid, stereotyped, recurrent, nonrythmic, brief and purposeless involuntary movements or vocalization. The characteristics of tics is that they can be suppressed for certain minutes or hours. Tic disorders are classified into three subtypes in DSM-III. They are: transient tic chronic motor or vocal tic and Tourette's disorder. These three disorders are considered to be clinical varieties of a tic spectrum. Tic disorders are male-predominant, age-dependent (most tics appear by puberty) disorders. Autosomal dominant inheritance has been suggested in Tourette's disorder. It is highly interesting and important to investigate the pathogenesis of tic symptoms because tics are thought to be in between neurological symptoms and psychiatric symptoms.

Dopamine↗

Relative contribution of attention-deficit hyperactivity disorder, obsessive-compulsive disorder, and tic severity to social and behavioral problems in tic disorders.

The aim of this study was to investigate social and behavioral problems related to attention-deficit hyperactivity disorder (ADHD), obsessions and compulsions, and tic severity in children with a tic disorder. Parents of 58 children with a tic disorder with and without different forms of ADHD completed the Child Behavior Checklist (CBCL) and the Children's Social Behavior Questionnaire. Patients with a tic disorder with primarily hyperactive-impulsive ADHD had the highest questionnaire scores, patients with primarily inattentive ADHD had medium scores, and patients without ADHD had the lowest scores. On most subscales, significant part correlations with ADHD severity, but not tic severity, were obtained. Severity of obsessions and compulsions was independently correlated with the CBCL Thought Problems subscale but not with most other subscales. There was no significant correlation between tic severity and ADHD severity. Thus, in patients with a tic disorder, the presence and severity of ADHD are the main predictors of associated behavioral and social problems.

Adolescent↗

Childhood-onset obsessive-compulsive disorder and tic disorders: case report and literature review.

A subgroup of childhood-onset obsessive-compulsive disorder (OCD) and tic disorders has been found to have a postinfectious autoimmune-mediated etiology. Clinical observations and systematic investigations have shown that a subgroup of children with OCD and/or tic disorders have the onset and subsequent exacerbations of their symptoms following infections with group A beta-hemolytic streptococci (GABHS). This subgroup has been designated by the acronym PANDAS: pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections. Five clinical characteristics define the PANDAS subgroup: presence of OCD and/or tic disorder, prepubertal symptom onset, sudden onset or abrupt exacerbations, association with neurological abnormalities during exacerbations (adventitious movements or motoric hyperactivity), and the temporal association between symptom exacerbations and GABHS infections. The proposed poststreptococcal inflammatory etiology provides a unique opportunity for treatment and prevention, including immunomodulatory therapies such as plasma exchange and intravenous immunoglobulin. A placebo-controlled trial revealed that both intravenous immunoglobulin and plasma exchange were effective in reducing neuropsychiatric symptom severity (40 and 55% reductions, respectively) for a group of severely ill children in the PANDAS subgroup. Further research is required to determine why the treatments are helpful and to ascertain whether or not antibiotic prophylaxis can help prevent poststreptococcal symptom exacerbations.

Anti-Bacterial Agents↗

Phenomenology of tics and natural history of tic disorders.

Tic symptoms, the hallmark of Tourette's syndrome (TS), may simply be fragments of innate behavior. As such, the sensory urges that precede tics may illuminate some of the normal internal cues that are intimately involved in the assembly of behavioral sequences. The occurrence of tics in time appears to have fractal characteristics that may help to explain the waxing and waning course of tic disorders. Longitudinal studies are currently underway that should permit a close examination of the natural fluctuations in tic severity using valid and reliable clinician-rated scales of tic severity. The natural history of tics typically shows a marked decline during the course of adolescence. However, TS can also be associated with social, emotional, and academic difficulties in early adulthood. Comorbid attention deficit/hyperactivity disorder and obsessive-compulsive disorder are likely to influence the long-term adaptive outcomes of individuals with TS. Future progress may also be expected as endophenotypes, and possibly genetic markers, are identified that are associated with specific comorbid conditions and etiologically distinct forms of TS.

Age Factors↗

Comorbidity in ADHD-children: effects of coexisting conduct disorder or tic disorder on event-related brain potentials in an auditory selective-attention task.

In children with attention-deficit hyperactivity disorder (ADHD) some deficits in auditory information processing seem to exist. Further, comorbidity of ADHD with conduct disorder (CD) and tic disorder (Tic) is quite common but not yet fully understood. Thus, we investigated the effects of these two disturbances, when combined with ADHD, on electrophysiological correlates of auditory information processing. An auditory selective-attention task was used, and temporal as well as frontal lobe sensitive event-related electrical brain activity indicators like mismatch negativity (MMN) and negative difference wave (Nd), as well as P300 were registered in four groups of children (healthy controls, ADHD-only, and combined ADHD + CD as well as ADHD + Tic; total number 42). Performance measures showed that ADHD + CD had a higher impact on errors and reaction times than ADHD + Tic. The MMN effect indicated that all ADHD groups showed lower MMN amplitudes compared to normals, but only the group with ADHD + CD suffered from a significant deficiency in automatic auditory information processing. Nd and P300 amplitudes showed no significant group differences. It may be assumed that neurodynamic sufficiency in ADHD-only and ADHD + Tic children seems to be similarly impaired while there might be a greater deficit in ADHD + CD.

Attention↗

New treatments for tic disorders.

Tics vary in severity from infrequent and barely noticeable to nearly continuous and highly disruptive. Treatment of tic disorders depends on the severity of the tics, the distress they cause, and the effects they have on school, work, or daily activities. Many tics do not interfere with school or everyday life and do not require specific treatment. Comorbid disorders such as attention deficit hyperactivity disorder, anxiety, and obsessive-compulsive disorder occur in more than 50% of patients. The associated comorbidity can be more bothersome than the tics themselves. Treatment should be aimed at the most troubling symptom. Education and reassurance are often sufficient for mild and occasional tics. For tics of moderate severity, clonidine and guanfacine have a reasonable safety profile. They are considered as first-line medications. With clonidine, start with 0.05 mg at bedtime. Increase as needed and as tolerated by 0.05 mg every 4 to 7 days to a maximum dosage of 0.3 to 0.4 mg/day divided three or four times a day. With guanfacine, start with 0.5 mg at bedtime. The dosage may be increased as needed and as tolerated by 0.5 mg every week to a maximum dosage of 3 to 4 mg/day, divided twice a day. There are emerging data that behavioral therapy is effective for treatment of tics in some individuals. Dopamine receptor blockers are the most potent medications for treating severe tics. The efficacy appears to be proportionate to the affinity for dopamine D2 receptors. Thus, standard antipsychotic medications such as haloperidol, pimozide, or fluphenazine are the most potent. However, these medications commonly cause bothersome side effects. Therefore, we recommend use of atypical neuroleptics before standard neuroleptics in most patients. Risperidone is usually the first choice and may have efficacy for behavior problems that often accompany tics. Start with 0.01 mg/kg/dose once a day; dosage may be increased by 0.02 mg/kg/day at weekly intervals, up to 0.06 mg/kg/dose once a day. Ziprasidone and olanzapine are reasonable alternatives.

Journal Article↗

Children with comorbid attention-deficit-hyperactivity disorder and tic disorder: evidence for additive inhibitory deficits within the motor system.

For children with attention-deficit-hyperactivity disorder (ADHD) or tic disorder (TD), we recently reported deficient inhibitory mechanisms within the motor system by using transcranial magnetic stimulation. These deficits--stated as reduced intracortical inhibition in ADHD and shortened cortical silent period in TD--could be seen as neurophysiological correlates of motor hyperactivity and tics, respectively. To investigate neurophysiological aspects of comorbidity, we measured motor system excitability for the first time also in children with combined ADHD and TD. The findings of a reduced intracortical inhibition as well as a shortened cortical silent period in these comorbid children provide evidence for additive effects at the level of motor system excitability.

Adolescent↗

Anxiety and depression symptoms and response to methylphenidate in children with attention-deficit hyperactivity disorder and tic disorder.

This study examined response to methylphenidate in children with attention-deficit/hyperactivity disorder (ADHD) and chronic multiple tic disorder. The primary goal was to determine if children with anxiety or depression symptoms showed a less favorable response to treatment. Subjects were 38 prepubertal children who participated in an 8-week, double-blind, placebo-controlled, methylphenidate crossover evaluation. Treatment effects were assessed with direct observations of child behavior in public school and clinic settings; rating scales completed by parents, teachers, and clinicians; and laboratory analogue tasks. There was little evidence (group data) that children with anxiety or depression symptoms responded in a clinically different manner to methylphenidate than youngsters who did not exhibit these symptoms, particularly in school observations of the core features of ADHD. Seeming differences between children with and without comorbid anxiety or depression symptoms and drug response are likely explained by differences in pretreatment levels of negativistic behaviors (i.e., symptoms of oppositional defiant disorder or conduct disorder). Methylphenidate appears to be effective for the management of ADHD behaviors in children with mild to moderate anxiety or depression symptoms; nevertheless, much research remains to be performed in this area.

Adolescent↗

Therapeutic plasma exchange and intravenous immunoglobulin for obsessive-compulsive disorder and tic disorders in childhood.

BACKGROUND: In children, exacerbations of tics and obsessive symptoms may occur after infection with group A beta-haemolytic streptococci. If post-streptococcal autoimmunity is the cause of the exacerbations, then children might respond to immunomodulatory treatments such as plasma exchange or intravenous immunoglobulin (IVIG). We studied whether plasma exchange or IVIG would be better than placebo (sham IVIG) in reducing severity of neuropsychiatric symptoms. METHODS: Children with severe, infection-triggered exacerbations of obsessive-compulsive disorder (OCD) or tic disorders, including Tourette syndrome, were randomly assigned treatment with plasma exchange (five single-volume exchanges over 2 weeks), IVIG (1 g/kg daily on 2 consecutive days), or placebo (saline solution given in the same manner as IVIG). Symptom severity was rated at baseline, and at 1 month and 12 months after treatment by use of standard assessment scales for OCD, tics, anxiety, depression, and global function. FINDINGS: 30 children entered the study and 29 completed the trial. Ten received plasma exchange, nine IVIG, and ten placebo. At 1 month, the IVIG and plasma exchange groups showed striking improvements in obsessive-compulsive symptoms (mean improvement on children's Yale-Brown obsessive compulsive scale score of 12 [45%] and 13 [58%], respectively), anxiety (2.1 [31%] and 3.0 [47%] improvement on National Institute of Mental Health anxiety scale), and overall functioning (2.9 [33%] and 2.8 [35%] improvement on National Institute of Mental Health global scale). Tic symptoms were also significantly improved by plasma exchange (mean change on Tourette syndrome unified rating scale of 49%). Treatment gains were maintained at 1 year, with 14 (82%) of 17 children "much" or "very much" improved over baseline (seven of eight for plasma exchange, seven of nine for IVIG). INTERPRETATION: Plasma exchange and IVIG were both effective in lessening of symptom severity for children with infection-triggered OCD and tic disorders. Further studies are needed to determine the active mechanism of these interventions, and to determine which children with OCD and tic disorders will benefit from immunomodulatory therapies.

Adolescent↗

Desipramine treatment of children with attention-deficit hyperactivity disorder and tic disorder or Tourette's syndrome.

OBJECTIVE: As many as 50% of patients with Tourette's syndrome (TS) also meet diagnostic criteria for attention-deficit hyperactivity disorder (ADHD). Since antipsychotics are of limited value in controlling the symptoms of ADHD and stimulants can exacerbate tics, alternative treatments are directly needed. The purpose of this study was the examination of the efficacy of desipramine (DMI) in the treatment of pediatric patients with chronic tic disorder (CTD; TS or chronic motor tics) + attention-deficit hyperactivity disorder (ADHD). METHOD: All pediatric patients with the diagnosis of CTD that were treated with DMI were ascertained from retrospective systematic chart reviews of a psychopharmacology clinic and a neurology service specialized in movement disorders. RESULTS: Of the 33 identified patients, 30 had comorbid CTD + ADHD and three had CTD alone. In all, 82% had significant improvement in CTD symptomatology and 80% significantly improved ADHD symptoms without major adverse effects over an average follow-up period of 16 months. CONCLUSIONS: Although the conclusions from this retrospective report can be seen as preliminary only until replicated in a controlled investigation, the magnitude and persistence of the response is encouraging and suggest a therapeutic role for DMI in the treatment of CTD + ADHD patients.

Adolescent↗

Nortriptyline treatment of children with attention-deficit hyperactivity disorder and tic disorder or Tourette's syndrome.

Although as many as 50% of patients with Tourette's syndrome (TS) also meet diagnostic criteria for Attention-deficit Hyperactivity Disorder (ADHD), until recently little attention has been paid to ADHD symptoms in the assessment of therapeutic outcome of TS or patients with chronic motor tics (CMT). Because antipsychotics are of limited value in controlling the symptoms of ADHD and stimulants can exacerbate tics, alternative treatments for patients with chronic tic disorder (CTD) (TS or CMT) plus ADHD (CTD+ADHD) patients are direly needed. We examined the efficacy of the tricyclic antidepressant nortriptyline in the treatment of pediatric patients with CTD+ADHD ascertained from systematic chart reviews of all subjects with this diagnosis treated with nortriptyline. Of the 12 identified patients, 67% had significant improvement in CTD symptomatology and 92% significantly improved ADHD symptoms without major adverse effects over an average follow-up period of 19 months. Although the conclusions from this retrospective report can be only seen as preliminary until replicated in a controlled investigation, the magnitude and persistence of the response is encouraging and suggest a therapeutic role for nortriptyline in the treatment of CTD+ADHD patients.

Adolescent↗

Adult onset tic disorders.

BACKGROUND: Tic disorders presenting during adulthood have infrequently been described in the medical literature. Most reports depict adult onset secondary tic disorders caused by trauma, encephalitis, and other acquired conditions. Only rare reports describe idiopathic adult onset tic disorders, and most of these cases represent recurrent childhood tic disorders. OBJECTIVE: To describe a large series of patients with tic disorders presenting during adulthood, to compare clinical characteristics between groups of patients, and to call attention to this potentially disabling and underrecognised neurological disorder. METHODS: Using a computerised database, all patients with tic disorders who presented between 1988 and 1998 to the movement disorders clinic at Columbia-Presbyterian Medical Center after the age of 21 were identified. Patients' charts were retrospectively reviewed for demographic information, age of onset of tics, tic phenomenology, distribution, the presence of premonitory sensory symptoms and tic suppressibility, family history, and associated psychiatric features. These patients' videotapes were reviewed for diagnostic confirmation and information was obtained about disability, course, and response to treatment in a structured follow up interview. RESULTS: Of 411 patients with tic disorders in the database, 22 patients presented for the first time with tic disorders after the age of 21. In nine patients, detailed questioning disclosed a history of previous childhood transient tic disorder, but in 13 patients, the adult onset tic disorder was new. Among the new onset cases, six patients developed tics in relation to an external trigger, and could be considered to have secondary tic disorders. The remaining patients had idiopathic tic disorders. Comparing adult patients with recurrent childhood tics and those with new onset adult tics, the appearance of the tic disorder, the course and prognosis, the family history of tic disorder, and the prevalence of obsessive-compulsive disorder were found to be similar. Adults with new onset tics were more likely to have a symptomatic or secondary tic disorder, which in this series was caused by infection, trauma, cocaine use, and neuroleptic exposure. CONCLUSIONS: Adult onset tic disorders represent an underrecognised condition that is more common than generally appreciated or reported. The clinical characteristics of adults newly presenting to a movement disorder clinic with tic disorders are reviewed, analysed, and discussed in detail. Clinical evidence supports the concept that tic disorders in adults are part of a range that includes childhood onset tic disorders and Tourette's syndrome.

Adult↗