His mug shot looks nothing like his earlier Facebook photos. He doesn't look like "doper", you know? His face seems puffy. I've seen some strong mental-health medications cause that look....along with psychosis.
When I saw the Montana mugshot I thought "drunk." Alcoholics frequently have puffiness of the face, would also explain the reddened face and crazy eyes. Though the eye thing I find to be partially about the placement of the camera and flash when the photograph was taken.