. Previous studies have not specifically addressed this issue. The number of patients on anticoagulants that was included in the Dutch study was small (218 of 3181 [7%]). The level of anticoagulation, however, was not taken into account, as blood coagulation tests were not formally recorded in this study. Delayed intracranial complications after mild head injury can be devastating and fatal if they occur outside the hospital. Guidelines to manage minor head injury will need to find a reasonable balance between use of health care resources, and detecting rare but serious complications. Our case report underlines the need for a more individualized approach towards patients with risk factors that increase their risk of complications severely, even if initial assessment is normal.