Adkinson, 28, was last seen leaving his residence at York Creek Apartments off of Alpine Avenue at 1 p.m. on Saturday.
He is 6 feet 2 inches tall, 275 lbs with brown hair and brown eyes. He was last seen wearing a green coat with fur on the hood and blue jeans.
According to a press release, Adkinson has been diagnosed with and takes medication for schizophrenia. He left his apartment on foot and officials say he does not have access to a vehicle.