Psychiatric stays are now shorter and close interactions with the outpatient care network is therefore more critical than before. The first weeks following discharge from psychiatric hospital represent a period of high risk for relapse, readmission or even suicide. Case management has a proven efficacy in facilitating patients' deinstitutionalisation after very long hospitalisations and in stabilizing high users of psychiatric care. In contrast, studies exploring the impact of time limited case management following discharge from short stays (transitional case management) in earlier phases of psychiatric disorders in connection with primary care are lacking.