Clinical Research Directory

Inclusion Criteria: * Participant is willing and able to give assent (aged 12-15 years) or informed consent (aged 16 years and older) for participation in the study, * Parent/guardian is willing to give informed consent for participants aged 12-15 years. * Adolescents aged 12 to 19 years. * Were accepted for assessment at a tertiary specialist paediatric pain service, indicating by definition that they experience long-standing, treatment-resistant chronic pain that is functionally interfering. * Able to read and converse fluently in English. * Participant is willing to install the m-Path app on a smartphone that runs on Android or iOS to complete the daily assessments. (Please note that a recent Ofcom report has shown that by the age of 12 years, 98% of young people in the UK have their own mobile phone, used by 93% to access social media apps or sites. This supports the nearly universal access of smartphones in this age group) Exclusion Criteria: * If some serious acute pathology (e.g., infection, fracture, disease process (e.g., cancer with a potentially fatal trajectory)) or surgical procedure is the cause of the resulting pain complaint. * If the patient is too psychologically unstable to safely participate in this research, based on clinical judgment (e.g., experiences of acute psychosis)