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Gilles de la Tourette Syndrome:
Patient’s Knowledge and Concern
of Adverse Effects
Katie Kompoliti, MD,
*
Christopher G. Goetz, MD,
Mary Morrissey, ScD, and Sue Leurgans, PhD
Department of Neurological Sciences, Rush University
Medical Center, Chicago, Illinois, USA
Abstract: The objective of this study was to assess aware-
ness and concern of neuroleptic (NL)-induced side effects
in Gilles de la Tourette syndrome (GTS) patients. Al-
though NLs are effective tic suppressants, they can be
associated with various side effects. Data on patient
knowledge and concern about side effects can guide ed-
ucational efforts. One hundred consecutive GTS patients
or parents in a tertiary referral medical center re-
sponded to a standardized, in-person questionnaire.
They were given a list of 15 side effects and asked which
could be ascribed to NLs (9) or not (6). Side effect
concern was rated on a 0 (none) to 10 (extreme) scale.
The mean age for the 100 patients was 19.4 14 years;
55 had a history of NL use, and 45 were NL-naive. Less
than half the cohort met criteria for being well informed.
Only one third of the listed NL side effects were accu-
rately identified by at least 75% of the respondents.
Patients with past or current NL treatment were more
accurate in identifying NL side effects but less concerned
about them than NL-naive patients. The side effects of
greatest concern were seizures, tardive dyskinesia, think-
ing and emotion disturbances, and cardiac irregularities.
Overall, patient awareness of NL side effects is insuffi-
cient, and although past exposure to NLs enhances
knowledge, it decreases concern. © 2005 Movement Dis-
order Society
Key words: tics; dopamine blockers; tardive dyskinesia;
neuroleptics; toxicity
Gilles de la Tourette syndrome (GTS) is a childhood-
onset disorder characterized by motor and vocal tics.
1
Both the traditional high potency
2
and the newer atypical
neuroleptics (NLs)
3,4
are efficacious for the treatment of
tics. Despite efficacy, a very high proportion of patients
eventually discontinue NL therapy because of side ef-
fects.
5
In the GTS population, there are no published reports
investigating the patient’s or guardian’s knowledge and
concern about potential NL side effects. We hypothe-
sized that in a university-based tertiary care medical
practice, overall knowledge would be high and concern
about medication side effects would be based on accurate
information. Furthermore, we considered that patients
never exposed to NLs would be less informed and also
less concerned about side effects than subjects with cur-
rent or past NL treatment. With the overall aim of de-
signing pertinent educational programs for tic patients,
we conducted a questionnaire study to investigate these
hypotheses in a consecutive series of outpatients with
GTS.
STUDY DESIGN
Demographics
A questionnaire study was administered in person on
consecutive patients with GTS seen in the Movement
Disorder Center of Rush University Medical Center. The
project was approved by the Institutional Review Board.
The data were collected from the guardians for patients
under 18 years of age and from the patients themselves if
they were over 18. The data included age, gender, age at
disease onset, comorbid conditions (attention deficit hy-
peractivity disorder, obsessive– compulsive disorder,
pervasive developmental disorder, learning disability, af-
fective disorders and psychosis), exposure to NLs cur-
rently (over the past month before the interview) or in the
past (more than a month before the interview), current tic
medications, tic medications used in the past, and other
current medications. The comorbid conditions were de-
fined according to DSM IV criteria.
1
The patient or
guardian was asked to define whether motor or vocal tics
were primarily the source of disability and to rate tic
severity on a 0 (none) to 10 (worst) global severity
*Correspondence to: Dr. Katie Kompoliti, Department of Neurolog-
ical Sciences, Section of Movement Disorders, 1725 W. Harrison
Street, Suite 755, Chicago, IL 60612. E-mail: kkompoli@rush.edu
Received 3 February 2005; Revised 22 April 2005; Accepted 5 May
2005
Published online 13 September 2005 in Wiley InterScience (www.
interscience.wiley.com). DOI: 10.1002/mds.20680
248 K. KOMPOLITI ET AL.
Movement Disorders, Vol. 21, No. 2, 2006