Emergency patients have been warned they could face a 70-mile journey due to hospital staffing pressures.
NHS Dumfries and Galloway said it was experiencing an “extremely high level of activity” at its two main sites.
It said staffing pressures at the Galloway Community Hospital in Stranraer could mean people will be taken to Dumfries Infirmary.
It has asked for patients, family and carers to understand that “flexibility” was needed to manage demand.
A statement from the health board said it had been facing high levels of activity since the Easter weekend.
It said that had meant services were having to operate flexibly in order to deal with the situation.