Global impact of the COVID-19 pandemic on mental health services: A systematic review.

The purpose of the review was to investigate the changes in mental health services during the COVID-19 pandemic. A systematic review of qualitative, quantitative and mixed-methods studies was conducted from February 2021 to March 2022 using four databases and five languages. 29 studies reporting on mental health services in 63 countries were included. Findings were organised according to nine major topics: (1) lack of preparedness vs. timely response and flexible solutions, (2) changes in access, referrals, and admission, (3) impacts on outpatient, community and psychosocial services, (4) inpatient: reorganisation of hospital psychiatric units/acute wards, (5) diagnostic and therapeutic adaptations, (6) effects on medication, (7) infection control measures, (8), changes in patients' demands, engagement, and mental health, and (9) impacts on staff and team. Many services were closed intermittently or considerably reduced while telepsychiatric services were extensively expanded. Face-to-face services decreased, as did the work with therapeutic groups. Many inpatient units restructured their services to accommodate COVID-19 patients. While the digitalisation of services allowed for better access to services for some, restrictive measures hindered access for most. Staff experienced changes such as heightened impacts on their own mental health, burdens on patients and the pausing of professional training. Clearly, diverse findings of studies relate to different (national) contexts, type of service offered, but also to the time of the investigation, as studies noted several distinct phases of change during the pandemic. This review suggests directions for policy and service development, such as fostering community services and providing support services for particularly vulnerable populations.