Exploring the Link Between Pain and Distress in Adolescent Patients with Chronic Pain

Inclusion Criteria: Part 1: Adolescents * Participant is willing and able to give assent (aged 12-15) or informed consent (aged =\>16) for participation in the study * Adolescents aged 12 to 19 years * Self-reported experience of chronic pain (i.e., recurrent and/or persistent pain at least once per week for at least 3 months). * Able to read and converse fluently in English * Parent/carer willing to give informed consent for participants aged 12-15 Part 2: Adults * Participant is willing and able to give informed consent for participation in the study. * Participant is the parent/carer for a child aged 12 to 19 years, with chronic pain (i.e., recurrent or persistent pain at least once per week for the past 3 months), and this child is participating in this study. * Able to read and converse fluently in English Additional criteria for Part 3: Follow-up part · In possession of a smartphone to complete the momentary assessments. Exclusion Criteria: Part 1: Adolescents * If some type of serious pathology (e.g., infection, fracture, disease process (e.g., cancer)) or surgical procedure is the cause of the resulting pain complaint. * If the patient is too psychologically unstable (e.g., experience of hallucinations or delusions, or with known acute suicide risk) to safely participate in this research, based on clinical judgment. Part 2: Adults -If the clinical care team thinks the parent/ caregiver is unsuitable for this study. Additional criteria for Part 3: Follow-up part -Inability to provide data via the use of a smartphone