Clinical Problem Solving: A 67-year-old Man With Painful Leg Weakness and Difficulty Walking.

Rapidly progressive neurologic symptoms can be alarming to both the patient and the clinician, given the concern for serious pathologies. In this case, a 67-year-old patient presents with painful sensorimotor symptoms that progress rapidly within days of onset. Proper localization and consideration of medical co-morbidities is essential for accurate diagnosis. This case highlights the importance of a detailed neurologic examination to aid in the localization and differential diagnosis. The case will take readers through a stepwise approach to this complex neurologic presentation, work-up and management.