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Introduction: Chronic pelvic pain (CPP) is a common condition affecting up to 26.6% of women, with many suffering for several years before diagnosis and/or treatment. Its clinical presentation is varied and there are frequently comorbid conditions both within and outside the pelvis. We aim to explore whether specific subgroups of women with CPP report different clinical symptoms and differing impact of pain on their quality of life (QoL)., Methods: The study is part of the Translational Research in Pelvic Pain (TRiPP) project which is a cross-sectional observational cohort study. The study includes 769 female participants of reproductive age who completed an extensive set of questions derived from standardised WERF EPHect questionnaires. Within this population we defined a control group (reporting no pelvic pain, no bladder pain syndrome, and no endometriosis diagnosis, N  = 230) and four pain groups: endometriosis-associated pain (EAP, N  = 237), interstitial cystitis/bladder pain syndrome (BPS, N  = 72), comorbid endometriosis-associated pain and BPS (EABP, N  = 120), and pelvic pain only (PP, N  = 127)., Results: Clinical profiles of women with CPP (13-50 years old) show variability of clinical symptoms. The EAP and EABP groups scored higher than the PP group ( p  < 0.001) on the pain intensity scales for non-cyclical pelvic pain and higher than both the BPS and PP groups ( p  < 0.001) on the dysmenorrhoea scale. The EABP group also had significantly higher scores for dyspareunia ( p  < 0.001), even though more than 50% of sexually active participants in each pain group reported interrupting and/or avoiding sexual intercourse due to pain in the last 12 months. Scores for the QoL questionnaire (SF-36) reveal that CPP patients had significantly lower QoL across all SF-36 subscales ( p  < 0.001). Significant effects were also observed between the pain groups for pain interference with their work ( p  < 0.001) and daily lives ( p  < 0.001), with the EABP suffering more compared to the EAP and PP groups ( p  < 0.001)., Discussion: Our results demonstrate the negative impact that chronic pain has on CPP patients' QoL and reveal an increased negative impact of pain on the comorbid EABP group. Furthermore, it demonstrates the importance of dyspareunia in women with CPP. Overall, our results demonstrate the need for further exploration of interventions targeting QoL more broadly and suggest that novel approaches to classifying women with CPP are needed., Competing Interests: AWH: reports grant funding from the MRC, NIHR, CSO, Wellbeing of Women, Roche Diagnostics, Astra Zeneca, Ferring, Charles Wolfson Charitable Trust and Standard Life. His employer has received consultancy fees from Roche Diagnostics, AbbVie, Nordic Pharma and Ferring, outside the submitted work. In addition, AWH has a patent for a serum biomarker for endometriosis pending. AH: Employee of Bayer AG, Germany. EPZ: received financial support from Grunenthal and Mundipharma for research activities and advisory and lecture fees from Grünenthal, Novartis and Mundipharma. In addition, she receives scientific support from the German Research Foundation (DFG), the Federal Ministry of Education and Research (BMBF), the German Federal Joint Committee (G-BA) and the Innovative Medicines Initiative (IMI) 2 Joint Undertaking under grant agreement No 777500. This Joint Undertaking receives support from the European Union's Horizon 2020 research and innovation programme and EFPIA All money went to the institution EMP.-Z is working for RDT: Ad board for BAYER, IASP task force on chronic pain classification. CMB: Research Grants from Bayer Healthcare, MDNA Life Sciences, Roche Diagnostics, European Commission, NIH His employer has received consulancy fees from Myovant and ObsEva for work outside of this project. FC: Consultant and/or investigator for Allergan (Abbvie), Astellas, Bayer, Ipsen and Recordati. SAM: has been an advisory board member for AbbVie and Roche and receives research funding from the National Institutes of Health, the US Department of Defense, the J Willard and Alice S Marriott Foundation, and AbbVie; none are related to the presented work; the J Willard and Alice S Marriott Foundation supported enrollment of and data collection from the A2A cohort in Boston from which TRiPP data were sampled. KTZ: reports grant funding from EU Horizon 2020, NIH US, Wellbeing of Women, Bayer AG, Roche Diagnostics, Evotec-Lab282, MDNA Life Sciences, outside the submitted work. JN: Employee and shareholder of Bayer AG, Germany. KV: declares research funding from Bayer Healthcare and UKRI and honoraria for consultancy and talks and associated travel expenses from Bayer Healthcare, Grunenthal GmBH, AbbVie and Eli Lilly. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest, (© 2023 Demetriou, Krassowski, Abreu Mendes, Garbutt, Vitonis, Wilkins, Coxon, Arendt-Nielsen, Aziz, Birch, Horne, Hoffman, Hummelshoj, Lunde, Meijlink, Perro, Rahmioglu, Terry, Pogatzki-Zahn, Sieberg, Treede, Becker, Cruz, Missmer, Zondervan, Nagel and Vincent.)