F95.2 Combined vocal and multiple motor tic disorder [de la Tourette]
F95.8 Other tic disorders
F95.9 Tic disorder, unspecified
Prevalence
A large, community-based study suggested that over 19% of school-age children have tic disorders.[4] The children with tic disorders in that study were usually undiagnosed. (Kurlan) As many as 1 in 100 people may experience some form of tic disorder, usually before the onset of puberty. (NIH) Tourette syndrome is the more severe expression of a spectrum of tic disorders, which are thought to be due to the same genetic vulnerability. Nevertheless, most cases of Tourette syndrome are not severe. Although a good body of investigative work indicates genetic linkage of the various tic disorders, further study is needed to confirm the relationship.[5]
Treatment
Treatment of tic disorders, although not usually necessary, is similar to treatment of Tourette syndrome. Tics should be distinguished from other causes of tourettism.
Notes
^ Evidente VG. "Is it a tic or Tourette's? Clues for differentiating simple from more complex tic disorders". Postgraduate medicine108 (5): 175-6, 179-82. PMID 11043089 Retrieved on 2007-05-24
^ DSM-IV-TR: numerical listing of codes and diagnoses. BehaveNet® Clinical Capsule. Retrieved on 2007-05-24.
^ Kurlan R, McDermott MP, Deeley C, et al. "Prevalence of tics in schoolchildren and association with placement in special education". Neurology 57 (8): 1383-8. PMID 11673576
^ Swerdlow NR. "Tourette syndrome: current controversies and the battlefield landscape". Current neurology and neuroscience reports. 5 (5): 329-31. PMID 16131414
References
Tourette Syndrome Fact Sheet. National Institutes of Health (NIH). Retrieved on 2005-03-23
The Tourette Syndrome Classification Study Group. "Definitions and classification of tic disorders". Arch. Neurol. 50 (10): 1013-6. PMID 8215958. Retrieved on 2005-03-22