Doctors in Tayside have warned psychiatric services in the region may be unsustainable due to staff shortages.
Inspectors from Healthcare Improvement Scotland were told the service relies on locum doctors but there are concerns about the number of these available.
They were told the shake-up of psychiatric services in Tayside, now under way, may take years to bear fruit.
Healthcare Improvement Scotland carried out a review of general adult psychiatry services in Carseview and community mental health services in December last year.
The watchdog returned for a follow-up inspection in June, the results of which have laid bare the full extent of the crisis in psychiatric services.
An NHS Tayside spokesman said: “While our transformation plans are implemented, locum staff continue to be employed to ensure we can provide clinically safe and effective care for our patients.”