A search is on for a patient missing from a Dartmouth hospital.

The Nova Scotia Health Authority says 23-year-old Colton White isn't at risk to others or himself, but could be the longer he's away from treatment.

He is described as 5'11, 160 lbs, with shoulder length brown hair. He was last wearing a blue and white striped dress shirt and blue jeans.

Anyone with information is asked to contact Halifax police.