RT Journal Article SR Electronic T1 Severe hyperthermia due to oral baclofen withdrawal JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e234710 DO 10.1136/bcr-2020-234710 VO 13 IS 9 A1 Vishesh Paul A1 Kari Righter A1 Elise Kim A1 Weston Nadherny YR 2020 UL http://casereports.bmj.com/content/13/9/e234710.abstract AB We report a case of a 53-year-old woman who presented initially with sepsis and later in her stay developed a severe and rapidly progressing hyperthermia after a decrease in oral baclofen dosage. Her fever peaked at 42.5○C (108.5○F), creating a broad differential diagnosis and complicating her initial sepsis diagnosis. When the oral baclofen dose was increased, the fevers resolved which confirmed the clinical diagnosis of baclofen withdrawal. Dose reductions of oral baclofen should be made gradually and with caution, and patients should be monitored for fevers as a possible symptom of baclofen withdrawal.