Traumatic oculomotor nerve avulsion with subarachnoid hemorrhage identified using magnetic resonance imaging.

Traumatic injury to the oculomotor nerve is a serious condition and generally carries a poor prognosis.Herein, we report a case of oculomotor nerve disruption with traumatic subarachnoid hemorrhage that was identified using an imaging technique. A 63-year-old female patient was brought to our emergency department following a traffic accident. Conservative treatment was initiated, leading to an improvement in her level of consciousness, although her right oculomotor nerve palsy symptoms remained unalleviated. She was discharged 2 weeks later with persistent symptoms of right oculomotor nerve palsy. In cases of cranial nerve palsy following head injuries, magnetic resonance imaging using steady-state constructive interference can provide valuable insights for detecting damage within the tentorial gap.