In Hirschtrit (2015)
85.7% of TS had at least one psychiatric comorbidity (57.7% had two or more).
OCD (66.1%) and ADHD (54.3%) were the most common and Anxiety (36.1 %) and Mood (29.8 %) disorders and disruptive behaviour (29.7 %) followed.
- Hirschtritt, M. E., Lee, P. C., Pauls, D. L., Dion, Y., Grados, M. A., Illmann, C., ... & Cath, D. C. (2015). Lifetime prevalence, age of risk, and genetic relationships of comorbid psychiatric disorders in Tourette syndrome. JAMA psychiatry, 72(4), 325-333.