What's New | Decker

Michael Fitzsimons, MD, Maricela Schnur , MD, MBA, Fangfang Xing, MD

Magdalena Anitescu, MD, PhD, John Henry Harrison, MD, Jeffrey Hopcian, MD

Understanding the new diagnostic terminology for substance misuse conditions as defined by the newest DSM-5
Identifying risk factors for substance misuse disorders and subsequently understanding clinical and social factors involved in this condition
Understanding various laboratory techniques used in routine urine drug tests performed in clinical practice

Elyse Cornett, PhD, Justin Creel, Charles Fox, MD, Alan D. Kaye, MD, PhD, Matthew B. Novitch, BS, Shilpadevi Patil, MD, Harish Siddaiah, MD

Maunak V. Rana, MD, Chirag D. Shah, MD, JD

Tamara Pringsheim, MD, MSc , Justyna R Sarna, MD, PhD

Epidemiologic studies have emphasized the limitations of accurately studying the prevalence of tic disorders. Epidemiologic reports of the prevalence of obsessive-compulsive disorder (OCD) in Tourette syndrome (TS) vary greatly based on the definitions used and range from 10 to 35% to approximately 40%.
Some studies have cited higher levels of comorbidity when including obsessive-compulsive symptoms without fulfilling disorder criteria. Interestingly, patients with comorbid OCD have a higher likelihood of complex tics at the initial presentation, which can further blur the distinction between tics versus compulsions in this cohort.
Obsessive-compulsive symptoms may occur later compared with tic onset, and psychoeducation should emphasize this possibility. However, OCD associated with TS has earlier onset compared with OCD alone.

Harold C. Sox, MD, MACP

Janet L Abrahm, MD, Kathy J Selvaggi, MD

Medicine and Psychiatry