Participatory Medicine is a model of cooperative health care that seeks to achieve active involvement by patients, professionals, caregivers, and others across the continuum of care on all issues related to an individual's health. The availability of social media, smartphones, self-monitoring devices and direct-to-consumer e-services far outstrips evidence about the efficiency, effectiveness and efficacy of using them for health improvement. The aim of this module is to examine how health informatics research is contributing to generate richer and more robust evidence about healthcare aims, health data processes, and health outcomes associated with Participatory Health Technologies.