Introduction: Acute transverse myelitis (ATM) refers to a rare severe acquired spinal cord inflammation, with a challenging diagnostic work-up and treatment.
Case Presentation: We report the case of a 42-year-old patient who presented with loss of temperature and pain sensation beneath the C5 dermatome in her left side and reported a history of a possible respiratory tract illness 10 days ago. Within 2 days, clinical worsening was noted, compatible with Brown-Sequard syndrome.