iPROLEPSIS project will perform four different clinical studies in four different counties. Learn more about clinical studies by visiting iprolepsis.eu. About clinical studies iPROLEPSIS will perform four different clinical studies: 1. iPROLEPSIS-PDPID PsA digital phenotyping and inflammation drivers study. 2. iPROLEPSIS-MOJMI Mast cells and optoacoustics-enabled joint and microvascular imaging study. 3. iPROLEPSIS-IDBV Inflammation digital biomarkers validation study. 4. iPROLEPSIS-PPIDC Prevention of PsA inflammation through digital care: an intervention study. Clinical studies will be conducted in 5 countries: Netherlands UK Portugal Greece Germany Clinical studies PsA digital phenotyping and inflammation drivers study (iPROLEPSIS-PDPID) Definition of novel optoacoustic biomarkers of psoriasis and psoriatic arthritis (iPROLEPSIS-MOJMI) Inflammation digital biomarkers validation study (iPROLEPSIS-IDBV) Prevention of PsA inflammation through digital care: an intervention study (iPROLEPSIS-PPIDC)