Seamus McNulty, 79, was last seen leaving a hotel in a seaside resort.
Gardai of the Republic of Ireland is appealing to the public for assistance in tracing his whereabouts.
McNulty was last seen around 5:05 pm on Wednesday, November 2nd.
He is described as being about 5 feet 7 inches tall, with a slim build, brown hair and blue eyes.
Last seen, he was wearing a 3/4 length hooded duffle coat, gray pants, and black trainers/shoes. He also wore glasses.
Anyone with information regarding Mr McNulty’s whereabouts should contact the Ballyshannon Garda Station on 071 9858530, the Garda Confidential Line on 1800 666 111, or any Garda Station.
Ministry of Health wishes injured social worker good luck