PEDBASE.org - The Pediatric Database - Detailed information of CHRONIC MOTOR OR VOCAL TIC DISORDER

CHRONIC MOTOR OR VOCAL TIC DISORDER

DEFINITION:

A movement disorder characterized by single or multiple motor or vocal tics.

EPIDEMIOLOGY:

incidence: ?
age of onset:
- mean of 7 years (from preschool to early school years)
risk factors:
- familial (inheritance pattern not established)
- may be genetically related to Tourette's Syndrome as this disorder and Tourette's Syndrome frequently occur in the same families
- comorbid conditions:
  - see "Tic Disorders"

CLINICAL FEATURES:

1. Diagnostic Criteria for Chronic Motor or Vocal Tic Disorder*

A. Either motor or vocal tics, but not both, have been present at some time during the illness.

B. The tics occur many times a day, nearly every day, or intermittently throughout a period of more than one year.

C. Onset before age 21.

D. Occurrence not exclusively during Psychoactive Substance Intoxication or known CNS disease, such as Huntington's chorea and postviral encephalitis.

*from DSM-III-R

2. Tic Characteristics

see "Tic Disorders"
severity of symptoms and functional impairment less than in Tourette's Syndrome

INVESTIGATIONS:

all tests (CT, MRI, PET, etc) are normal

MANAGEMENT:

see "Tic Disorders"
Psychological - Tics and/or Comorbid Problems
Pharmological - Tics and/or Comorbid Problems

Pediatric Database - CHRONIC MOTOR OR VOCAL TIC DISORDER

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