RT Journal Article SR Electronic T1 Paraparesis in a patient with advanced HIV infection: a diagnostic conundrum JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e240725 DO 10.1136/bcr-2020-240725 VO 14 IS 3 A1 Anupa John A1 Nitin Gupta A1 Kavitha Saravu YR 2021 UL http://casereports.bmj.com/content/14/3/e240725.abstract AB In patients with HIV infection, lower limb weakness is a result of the pathological involvement of the brain, spinal cord or peripheral nervous system. The pathological process can be opportunistic infections, nutrient deficiencies, neoplastic infiltration or HIV itself. Here, we present the case of a 50-year-old manual labourer who presented with gradually progressive lower limb weakness, sensory disturbances, impotence and urinary urgency. He was diagnosed with HIV during evaluation. Based on the presentation and other supportive laboratory and radiological evidence, the following differentials were considered: vacuolar myelopathy, amyotrophic lateral sclerosis and myeloradiculopathy. The patient was initiated on antiretroviral therapy, and he showed significant improvement of symptoms on follow-up. We report this case to discuss the diagnostic puzzle.