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MeshID = D013981 | |
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MeshID = D013981 | |
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'''Tic disorders''' are defined in the ] (DSM) based on type (motor or phonic) and duration of ]s (sudden, rapid, nonrhythmic, stereotyped, involuntary movements). |
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'''Tic disorders''' are defined in the ] (DSM) based on type (motor or phonic) and duration of ]s (sudden, rapid, nonrhythmic, stereotyped, involuntary movements). Tic disorders are defined similarly by the ] (ICD-10 codes). |
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==Classification== |
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==Classification== |
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Tic disorders are classified as follows:<ref>Evidente VG. ''Postgraduate medicine''108 (5): 175-6, 179-82. PMID 11043089 Retrieved on ]</ref> |
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They care classified as follows: |
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* '''Transient tic disorder''' consists of multiple motor and/or phonic tics with duration of at least 4 weeks, but less than 12 months. |
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* '''Transient tic disorder''' consists of multiple motor and/or phonic tics with duration of at least 4 weeks, but less than 12 months. |
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Tic disorders onset in childhood (before the age of 18), and are not due to the effects of medication or another medical condition. |
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Tic disorders onset in childhood (before the age of 18), and are not due to the effects of medication or another medical condition. |
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] diagnosis codes for the tic disorders are:<ref></ref> |
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] diagnosis codes for the tic disorders are:<ref> BehaveNet® Clinical Capsule. Retrieved on ].</ref> |
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* 307.20 Tic Disorder NOS (Not Otherwise Specified) |
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* 307.20 Tic Disorder NOS (Not Otherwise Specified) |
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* 307.21 Transient Tic Disorder |
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* 307.21 Transient Tic Disorder |
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* 307.23 ] |
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* 307.23 ] |
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] diagnosis codes are: <ref>] 10th Revision, Version for 2006</ref> |
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] diagnosis codes are: <ref> ]. Retrieved on ].</ref> |
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* F95.0 Transient tic disorder |
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* F95.0 Transient tic disorder |
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* F95.1 Chronic motor or vocal tic disorder |
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* F95.1 Chronic motor or vocal tic disorder |
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==Prevalence== |
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==Prevalence== |
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A large, community-based study suggested that over 19% of school-age children have tic disorders.<ref>{{cite journal |author=Kurlan R, McDermott MP, Deeley C, ''et al'' |title=Prevalence of tics in schoolchildren and association with placement in special education |journal=Neurology |volume=57 |issue=8 |pages=1383-8 |year=2001 |pmid=11673576 |doi=}}</ref> 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.<ref>{{cite journal |author=Swerdlow NR |title=Tourette syndrome: current controversies and the battlefield landscape |journal=Current neurology and neuroscience reports |volume=5 |issue=5 |pages=329-31 |year=2005 |pmid=16131414 |doi=}}</ref> |
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A large, community-based study suggested that over 19% of school-age children have tic disorders.<ref>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</ref> 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.<ref>Swerdlow NR. "Tourette syndrome: current controversies and the battlefield landscape". ''Current neurology and neuroscience reports''. 5 (5): 329-31. PMID 16131414</ref> |
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==Treatment== |
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==Treatment== |
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Treatment of tic disorders, although not usually necessary, is similar to ]. Tics should be distinguished from other causes of ]. |
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Treatment of tic disorders, although not usually necessary, is similar to ]. Tics should be distinguished from other causes of ]. |
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==See also== |
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==Notes== |
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{{reflist|2}} |
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{{Topics related to Tourette syndrome}} |
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==References== |
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==References== |
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* National Institutes of Health (NIH). Retrieved on ] |
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<references/> |
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* The Tourette Syndrome Classification Study Group. . ''Arch. Neurol.'' 50 (10): 1013-6. PMID 8215958. Retrieved on ] |
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*{{cite journal |author=Evidente VG |title=Is it a tic or Tourette's? Clues for differentiating simple from more complex tic disorders |journal=Postgraduate medicine |volume=108 |issue=5 |pages=175-6, 179-82 |year=2000 |pmid=11043089 |doi= |url=http://www.postgradmed.com/issues/2000/10_00/evidente_tic.htm}} |
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* National Institutes of Health (NIH). Accessed 23 Mar 2005. |
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*{{cite journal |author= |title=Definitions and classification of tic disorders. The Tourette Syndrome Classification Study Group |journal=Arch. Neurol. |volume=50 |issue=10 |pages=1013-6 |year=1993 |pmid=8215958 |doi= |url=http://web.archive.org/web/20050322170245/http://www.tsa-usa.org/research/definitions.html}} |
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<br /> |
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<br /> |
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{{Topics related to Tourette syndrome}} |
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<!--Categories, please alphabeticize--> |
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{{Mental and behavioural disorders}} |
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{{Mental and behavioural disorders}} |
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Tic disorders onset in childhood (before the age of 18), and are not due to the effects of medication or another medical condition.
A large, community-based study suggested that over 19% of school-age children have tic disorders. 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.
