The goal of this observational registry is to systematically collect and analyse real-world clinical and patient-reported data in individuals receiving treatment for acute and chronic pain. The main questions it aims to answer are: How do pain intensity, functional status, and quality of life evolve over time in patients with acute and chronic pain? How are different routine clinical treatment approaches associated with patient-reported outcomes in real-world clinical practice? Participants already receiving standard care for pain management will have routine clinical data recorded as part of their treatment and will be asked to complete standardized questionnaires on pain intensity, functional status, and quality of life at multiple time points during treatment and follow-up. Data are collected using a secure electronic system and are pseudonymised prior to analysis in accordance with Swiss data protection regulations.