We report a case of evacuation of a chronic subdural hematoma complicated by the occurrence of an epidural hematoma; we discuss the mechanisms that lead to such complication. Eighty-year-old patient admitted in emergency that underwent surgery to evacuate a chronic subdural hematoma. After the evacuation, an epidural hematoma complication was noticed. Several mechanisms have been described by many authors to explain the occurrence of epidural hematomas. The rapid evacuation of a chronic subdural hematoma may be the cause or burr hole that is not performed in the parietal bone can it is mandatory to follow some measures to minimize the risk of developing an epidural hematoma that results in the evacuation of a chronic subdural hematoma.