COMFORTIntegrated Mindfulness-based Cognitive Behaviour Therapy Versus Cognitive Behaviour Therapy for Provoked Vestibulodynia

PURPOSE: The purpose of this study is to determine whether an 8-session MBCT intervention for PVD is no worse than an 8-session CBT intervention for improving women's pain intensity and reducing their sexual distress, catastrophizing and hypervigilance towards pain. The investigators will also examine whether pain improvements at follow-up are mediated by changes in self-compassion and mindfulness (in the MBCT arm only) and moderated by pre-treatment credibility, personality, and anxiety sensitivity. HYPOTHESES: At follow-up (4 weeks, 6 months and 12 months post-treatment), women in the MBCT arm will experience a greater decline (vs. pre-treatment) in vestibular pain intensity compared to women in the CBT arm. At follow-up (4 weeks, 6 months and 12 months post-treatment), women in the MBCT arm will experience a greater decline (vs. pre-treatment) in sex-related distress, pain catastrophizing, hypervigilance, and self-reported pain during intercourse/other penetrative sex compared to women in the CBT arm. The investigators hypothesize that improvements in pain intensity during vestibular touch will be mediated by changes in self-compassion and mindfulness in the MBCT arm only at 6 and 12 months follow-up. The investigators hypothesize that pre-treatment credibility, personality, and anxiety sensitivity will significantly moderate improvements in pain intensity during vestibular touch at 6 and 12 months follow-up. The investigators hypothesize improvements in both arms on the "Patient Global Impression of Change Scale" and significantly greater improvements in the MBCT arm relative to the CBT arm at follow-up (4 weeks, 6 months and 12 months post-treatment).