Trends in psychiatry and psychotherapy · 2025
SOSkin: a randomized clinical trial of on-line cognitive-behavioral therapy for Skin Picking Disorder.
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Xavier Alice Castro Menezes, Prati Clarissa, Xavier Anita Castro Menezes, Brandão Murilo G, Ebert Alice Barbieri, Macedo Malu Joyce de A, Fernandes Maria João Baptista, Manfro Gisele Gus, Dreher Carolina Blaya
Аннотация
BACKGROUND: Cognitive Behavioral Therapy (CBT) is an effective treatment for Skin Picking Disorder (SPD). However, since individuals have limited access to CBT, telepsychotherapy can overcome this barrier.
OBJECTIVE: Evaluate the efficacy of a self-guided digital CBT intervention for SPD.
METHODS: This controlled clinical trial randomized 163 patients with SPD to receive 4 weeks of online CBT (SOSkin) or a control intervention (videos about quality of life). Primary outcome was the improvement in the Skin Picking Scale-Revised (SPS-R) and secondary outcomes were the improvement in Dermatology Life Quality Index Scale (DLQI), Generalized Anxiety Disorder Assessment Scale (GAD-7), and Patient Health Questionnaire-9 Scale (PHQ-9). Instruments were applied at baseline, middle and end of intervention and at 1 and 3 months of follow up. SOSkin usability was evaluated using the System Usability Scale (SUS). Data were analyzed using the Generalized Estimating Equations model (GEE).
CONCLUSION: There was no difference between groups in completion rates. SOSkin has excellent usability. Both groups improved the SPS-R and the DLQI scores after treatment and at the follow-up assessments. We found a significant time*group interaction in favor of CBT on SPS-R. Effect size of the intervention compared to control over SPS-R was small after treatment and at the follow-ups; over the DLQI was moderate after treatment and small at the follow-ups. CBT was superior to control on SPS-R when we compared the percentage of change from baseline. CBT was superior to control condition over DLQI at the end of treatment and at 1 month follow-up.
OBJECTIVE: Evaluate the efficacy of a self-guided digital CBT intervention for SPD.
METHODS: This controlled clinical trial randomized 163 patients with SPD to receive 4 weeks of online CBT (SOSkin) or a control intervention (videos about quality of life). Primary outcome was the improvement in the Skin Picking Scale-Revised (SPS-R) and secondary outcomes were the improvement in Dermatology Life Quality Index Scale (DLQI), Generalized Anxiety Disorder Assessment Scale (GAD-7), and Patient Health Questionnaire-9 Scale (PHQ-9). Instruments were applied at baseline, middle and end of intervention and at 1 and 3 months of follow up. SOSkin usability was evaluated using the System Usability Scale (SUS). Data were analyzed using the Generalized Estimating Equations model (GEE).
CONCLUSION: There was no difference between groups in completion rates. SOSkin has excellent usability. Both groups improved the SPS-R and the DLQI scores after treatment and at the follow-up assessments. We found a significant time*group interaction in favor of CBT on SPS-R. Effect size of the intervention compared to control over SPS-R was small after treatment and at the follow-ups; over the DLQI was moderate after treatment and small at the follow-ups. CBT was superior to control on SPS-R when we compared the percentage of change from baseline. CBT was superior to control condition over DLQI at the end of treatment and at 1 month follow-up.