An ear, nose and throat clinic at Letterkenny General Hospital has been temporarily closed because of high volumes of people attending the hospital.
The emergency department at the hospital is described as extremely busy and delays can be expected.
A spokesperson for the hospital has advised people that they should first consult their GP if they need medical attention.
People are advised that they only attend hospital in the case of an emergency.
The hospital is also advising patients due for a planned admission as an inpatient at the hospital, that they should contact the hospital beforehand to confirm the availability of a bed.
The hospital can be contacted at 074 9125888.