[Lara]

http://www.tourettesyndrome.net/ocd_overview.htm
OCD overview from Tourette Syndrome "Plus".

[Lara]

Neuropsychiatry -The Benefits of Reductionism

Challenging Phenomenology in Tourette Syndrome and
Obsessive–Compulsive Disorder: The Benefits of Reductionism

Anton Scamvougeras, MBChB, FRCPC
Clinical Associate Professor, Adult Tourette Syndrome Clinic, Neuropsychiatry Unit, Department of Psychiatry, University of British Columbia, Vancouver, British Columbia.

<snipped article>

Tourette syndrome (TS) and obsessive–compulsive disorder (OCD) share similar neurobiological mechanisms and, by virtue of that, demonstrate intriguingly interrelated clinical features.

The behaviours, cognitions and affective symptoms seen in these conditions are often complex and difficult to analyze. Distinctions are important because therapeutic direction may depend on them.

[Lara]

Older article, but always worth re-reading I find.

http://www.acnp.org/g4/GN401000161/CH.html

Tic Disorders

James F. Leckman, Bradley S. Peterson, David L. Pauls

For more than 60% of TS patients, persistent obsessive compulsive symptoms appear a few years after the onset of the tic symptoms (19,79,88). Some portion of these individuals go on to develop full blown OCD and may experience enduring OC symptoms even though their TS symptoms have otherwise diminished.

Tic-related OCD typically includes symptoms of aggressive, sexual and religious obsessions and related compulsions as well as obsessions of symmetry and exactness and associated arranging and counting compulsions

Although similar in many respects to other forms of OCD, tic-related OCD may be distinctive in terms of its earlier age of onset; the prominence of such symptoms as ritualized touching, tapping, and rubbing; and its relative refractoriness to serotonin reuptake inhibitors and responsiveness to augmentation with typical and atypical neuroleptics (57)

Many TS patients suffer from other comorbid psychiatric disorders including major depression and various anxiety disorders (18,19). The presence of a bipolar diathesis may herald a particularly problematic course

[Lara]

Advances in Neurology
Volume 99
Tourette Syndrome

John T. Walkup, Jonathon W. Mink, Peter J. Hollenbeck

Published by Lippincott Williams & Wilkins

OCD in Tourette Syndrome - Page 22

[Lara]

http://focus.psychiatryonline.org/cg...t/full/5/3/361
Focus 5:361-367, Summer 2007
© 2007 American Psychiatric Association

Tic or Compulsion? It's Tourettic OCD
Charles S. Mansueto, and David J. Keuler

[Lara]

from Clinical Psychology Review
doi:10.1016/S0272-7358(99)00044-6
Clinical Psychology Review
Volume 21, Issue 1, February 2001, Pages 137-157

Childhood-onset obsessive-compulsive disorder: A tic-related subtype of ocd?
Julie A. Eichstedt and Sharon L. Arnold
Concordia University, West Montreal, Quebec, Canada

In this article, current research on child- and adult-onset OCD is critically reviewed. It is proposed that child-onset OCD represents a phenomenologically and etiologically distinct subtype of OCD, bearing a close genetic relationship to tic-disorders and possibly sharing a common or similar pathogenesis. Clinical implications of the child- versus adult-onset OCD distinction are discussed.