 Ketamine has been less studied for pain management, however it has been safely used via different routes of administration in children. Studies dating back to 1990s use ketamine at doses as high as 6 mgkg intranasally in children for pre-medication prior to surgery or for sedation with little or no reported adverse effects. A hospital in Australia is currently conducting a clinical trial comparing IN fentanyl 1.5 ugkg to IN ketamine 1mgkg for the treatment of pain caused by isolated musculoskeletal injury. The intention of our study is similar to this, however the investigators will not limit the patients to those with only musculoskeletal pain and a more simplified pain scale will be used. 