Hepatitis C: A Rare Cause of Subacute Paralysis.

The effects of the hepatitis C virus (HCV) on the nervous system have been primarily reported with a pathology of the peripheral nervous system through the involvement of a vasculitic process via cryoglobulinemia. A review of the recent literature reinforced the likely association between chronic HCV infection and transverse myelitis (TM), but the causal relationship remains elusive. Here, we present a rare case of acute TM developing over the course of days from symptom onset and a concomitant new diagnosis of HCV infection. A 31-year-old male with a medical history of stimulant use disorder with intravenous methamphetamine use presented to the hospital for acute bilateral leg weakness. The weakness was predominantly in his thighs and later progressed to his calves over the course of days. He denied urinary or fecal incontinence; however, on hospital day two, he developed acute urinary retention requiring the insertion of a Foley catheter. An initial MRI of the spine revealed an intramedullary T2 hyperintense signal at the lower thoracic cord concerning for TM, multiple sclerosis, ischemia, or neoplasm. MRI of the brain was unremarkable. Lumbar puncture results also displayed no abnormalities. HCV screening should be considered in all patients who develop acute neurological deficits that are not otherwise explained, such as TM, given the significant morbidity associated with delayed treatment.