Characterising the Comorbid Subtypes of Tourette Syndrome

Tourette syndrome (TS) is a neurodevelopmental disability characterised by a cognitive profile of executive function deficits, particularly relating to inhibitory control. There is much evidence that TS is likely to occur comorbidly with other disorders and that this may exacerbate the presence o f cognitive disruptions. Attention Deficit Hyperactivity Disorder (ADHD) is one of the neurodevelopmental disorders that TS often occurs comorbidly with. This review provides an examination of TS including its clinical presentation, aetiology, comorbidities and cognitive profiles. A similar discussion is followed for ADHD. This leads to an examination of the key processes and measures of attention and inhibition with reference to these disorders. It is hoped that by examining these shared profiles, it might lead to a greater understanding of the overlap between these two neurodevelopmental disorders.