This study is, to our knowledge, the most comprehensive of its kind. It confirms the belief that psychiatric comorbidities are common among individuals with TS, demonstrates that most comorbidities begin early in life, and indicates that certain comorbidities may be mediated by the presence of comorbid OCD or ADHD. In addition, genetic analyses suggest that some comorbidities may be more biologically related to OCD and/or ADHD rather than to TS.
No takes yet. Share an insight, caveat, or question.
Hirschtritt et al. (2015) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: