91 Exposure and response prevention for tics & ocd: a uk paediatric case series

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Tourette Syndrome (TS) has high rates of comorbidity, with Obsessive Compulsive Disorder (OCD) amongst the most common (361%–50%2) resulting from shared genetic and neurobiological substrates.3,4Cognitive Behaviour Therapy incorporating Exposure and Response Prevention (CBT-ERP) is a first-line treatment for OCD, and more recent research has established ERP as effective in the treatment of TS.5 Principles of ERP apply to OCD and TS, i.e., exposure to a triggering stimulus followed by inhibiting the linked behaviour, leading to habituation and reducing the frequency and intensity of the urges/behaviours. This series aims to evaluate whether using ERP to treat OCD/TS has a corresponding impact on and reduction of co-occurring TS/OCD symptoms.


Four children diagnosed with TS and OCD were identified in a specialist outpatient clinic. All children completed two phases of treatment; i) CBT-ERP for OCD followed by ii) ERP for TS. Each phase of treatment started with disorder-specific psycho-education before undertaking ERP. Outcomes evaluated tic severity (YGTSS) and obsessions/compulsions (CY-BOCS).


Following OCD treatment, there was a significant decrease in CY-BOCS scores but no decrease in YGTSS scores. Following TS treatment, there was a significant decrease in YGTSS scores and further reductions in CY-BOCS scores. Fewer TS treatment sessions were required compared to standard protocols.


All children showed a clinically significant decrease in tics or OCD symptoms following symptom specific treatment. There was no secondary impact on tics following treatment for OCD. There was a continued decrease in OCD symptoms whilst receiving ERP for tics, however it is unclear whether this is a reflection of the ERP treatment for TS, or a continued effect of primary OCD treatment. Encouragingly, all children who received TS treatment required few sessions to reduce symptoms. Further discussion and clinical implications are discussed.

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