Dean is described as being 5’ 11 in height, of slim build, with short brown hair and a beard.
His last known whereabouts was at a Bank of Ireland ATM in Eyre Square, Galway city shortly after 7am on Sunday morning, and his family say he had been in Cork on Saturday evening.
He was last seen wearing a navy Superdry puffer jacket with a green check pattern on the shoulders and chest, black Adidas tracksuit bottoms with white stripes, a white t-shirt and black Adidas runners with a white sole.
Anyone with information on Dean’s whereabouts are asked to contact Santry Garda Station on 01 666 4000, the Garda Confidential Line on 1800 666 111, or any Garda Station.