Experience of being a frequent user of primary care and emergency department services: a qualitative systematic review and thematic synthesis.

This synthesis sheds light on potential changes to healthcare delivery in order to improve frequent users' experiences: individualised care plans or case management interventions to support self-management of symptoms and reduce psychological distress; and giving greater importance on the patient-providers relationship as a central facet of healthcare delivery. This synthesis also highlights future research directions that would benefit frequent users.