S1 E30 Case Study Series #11: When the Legs Give Out - Unraveling a Mysterious Neurologic Decline

Imagine you're in the ED, and a previously mobile 55-year-old male arrives with sudden, severe leg weakness, worsening back pain, and fecal incontinence. Alarming, right? This is more than a typical sciatica flare. As the team dives deeper, they uncover a medical maze—chronic vascular disease, prior urinary issues, new neurological deficits, and even a possible Guillain-Barré or neurosarcoidosis diagnosis on the table. With imaging revealing everything from spinal neuroforaminal narrowing to bilateral avascular necrosis and labs pointing to a urinary tract infection, this case demands clinical curiosity, multidisciplinary collaboration, and a whole-lot of critical thinking.Key Topics for Clinical Learning:Differential Diagnosis of Sudden Neurologic Decline→ How to evaluate lower extremity weakness with incontinence: spinal vs. autoimmune vs. infectious.Imaging Insights→ MRI findings: Cervical to lumbar narrowing, femoral head necrosis, and how they connect (or don’t) to the clinical picture.Infectious Complications→ Urinary tract infection or red herring? When to dig deeper.Labs & Pharmacology→ Interpreting lab trends in complex cases and managing polypharmacy across neurology, vascular, and infectious disease concerns.Multidisciplinary Collaboration→ Navigating consults between neurology, infectious disease, orthopedics, and internal medicine.