Link: Full Article The most disabling aspect of Tourette syndrome is that in 90% of cases, it exists in conjunction with another disorder. The most frequent co-occurring condition in people with Tourette is attention deficit hyperactivity disorder (ADHD), though the cause of this association is uncertain. Having one disorder can be disabling enough, but having two means coping with more than twice the disability.
New research published in the April 13 edition of the Journal of Developmental and Behavioural Pediatrics by University of Calgary and University of Toronto researchers looked at nearly 400 children with Tourette syndrome to try to understand the connection between these two disorders. Their findings show that while Tourette and ADHD have a major genetic component, there are potentially preventable perinatal factors that increase the risk of a co-occurring diagnosis of ADHD in children with Tourette.