OBJECTIVE: The Food and Drug Administration currently requires the package inserts of most psychostimulant medications to list the presence of a tic disorder as a contraindication to their use. Approximately half of children with Tourette's syndrome experience comorbid attention-deficit/hyperactivity disorder (ADHD). We sought to determine the relative efficacy of different medications in treating ADHD and tic symptoms in children with both Tourette's syndrome and ADHD. METHOD: We conducted a PubMed search to identify all double-blind, randomized, placebo-controlled trials examining the efficacy of medications in the treatment of ADHD in the children with comorbid tics. We used a random effects meta-analysis with standardized mean difference as our primary outcome to estimate the effect size of pharmaceutical agents in the treatment of ADHD symptoms and tics. RESULTS: Our meta-analysis included nine studies involving 477 subjects. We assessed the efficacy of six medications-dextroamphetamine, methylphenidate, alpha-2 agonists (clonidine and guanfacine), desipramine, atomoxetine, and deprenyl. Methylphenidate, alpha-2 agonists, desipramine, and atomoxetine demonstrated efficacy in improving ADHD symptoms in children with comorbid tics. Alpha-2 agonists and atomoxetine significantly improved comorbid tic symptoms. Although there was evidence that supratherapeutic doses of dextroamphetamine worsens tics, there was no evidence that methylphenidate worsened tic severity in the short term. CONCLUSIONS: Methylphenidate seems to offer the greatest and most immediate improvement of ADHD symptoms and does not seem to worsen tic symptoms. Alpha-2 agonists offer the best combined improvement in both tic and ADHD symptoms. Atomoxetine and desipramine offer additional evidence-based treatments of ADHD in children with comorbid tics. Supratherapeutic doses of dextroamphetamine should be avoided.
OBJECTIVE: The Food and Drug Administration currently requires the package inserts of most psychostimulant medications to list the presence of a tic disorder as a contraindication to their use. Approximately half of children with Tourette's syndrome experience comorbid attention-deficit/hyperactivity disorder (ADHD). We sought to determine the relative efficacy of different medications in treating ADHD and tic symptoms in children with both Tourette's syndrome and ADHD. METHOD: We conducted a PubMed search to identify all double-blind, randomized, placebo-controlled trials examining the efficacy of medications in the treatment of ADHD in the children with comorbid tics. We used a random effects meta-analysis with standardized mean difference as our primary outcome to estimate the effect size of pharmaceutical agents in the treatment of ADHD symptoms and tics. RESULTS: Our meta-analysis included nine studies involving 477 subjects. We assessed the efficacy of six medications-dextroamphetamine, methylphenidate, alpha-2 agonists (clonidine and guanfacine), desipramine, atomoxetine, and deprenyl. Methylphenidate, alpha-2 agonists, desipramine, and atomoxetine demonstrated efficacy in improving ADHD symptoms in children with comorbid tics. Alpha-2 agonists and atomoxetine significantly improved comorbid tic symptoms. Although there was evidence that supratherapeutic doses of dextroamphetamine worsens tics, there was no evidence that methylphenidate worsened tic severity in the short term. CONCLUSIONS:Methylphenidate seems to offer the greatest and most immediate improvement of ADHD symptoms and does not seem to worsen tic symptoms. Alpha-2 agonists offer the best combined improvement in both tic and ADHD symptoms. Atomoxetine and desipramine offer additional evidence-based treatments of ADHD in children with comorbid tics. Supratherapeutic doses of dextroamphetamine should be avoided.
Authors: Diana R Elbourne; Douglas G Altman; Julian P T Higgins; Francois Curtin; Helen V Worthington; Andy Vail Journal: Int J Epidemiol Date: 2002-02 Impact factor: 7.196
Authors: Thomas Spencer; Joseph Biederman; Barbara Coffey; Daniel Geller; Margaret Crawford; Sarah Kate Bearman; Reem Tarazi; Stephen V Faraone Journal: Arch Gen Psychiatry Date: 2002-07
Authors: James F Leckman; Michael H Bloch; Megan E Smith; Daouia Larabi; Michelle Hampson Journal: J Child Adolesc Psychopharmacol Date: 2010-08 Impact factor: 2.576
Authors: Hannah Weisman; Imraan A Qureshi; James F Leckman; Lawrence Scahill; Michael H Bloch Journal: Neurosci Biobehav Rev Date: 2012-10-23 Impact factor: 8.989
Authors: Sandra J J Kooij; Susanne Bejerot; Andrew Blackwell; Herve Caci; Miquel Casas-Brugué; Pieter J Carpentier; Dan Edvinsson; John Fayyad; Karin Foeken; Michael Fitzgerald; Veronique Gaillac; Ylva Ginsberg; Chantal Henry; Johanna Krause; Michael B Lensing; Iris Manor; Helmut Niederhofer; Carlos Nunes-Filipe; Martin D Ohlmeier; Pierre Oswald; Stefano Pallanti; Artemios Pehlivanidis; Josep A Ramos-Quiroga; Maria Rastam; Doris Ryffel-Rawak; Steven Stes; Philip Asherson Journal: BMC Psychiatry Date: 2010-09-03 Impact factor: 3.630