A case of recurrent transient arthritis What is causing transient migratory bouts of arthritis in this young man and how should he end up being managed? Case scenario Anton, aged 38 years, has had an apparent migratory polyarthritis in the last few months. He has already established joints affected with serious pain sequentially, heat, swelling and restricted mobility. Symptoms develop in the affected area, last several days to a week or two and resolve completely then, only to be replaced by comparable symptoms in a different joint. The sites affected have already been his shoulder, wrists, knuckles and interphalangeal joints and, lately, a knee..Using the full crossover design, walking speed increased while participants were taking dalfampridine-ER compared to placebo . Individuals also showed a positive change on the Functional Independence Measurement scale while taking dalfampridine-ER compared to placebo. The FIM level assesses an individual's ability to perform daily duties such as for example bathing, grooming, feeding on, and walking independently. Additional exploratory efficacy procedures in the analysis are being analyzed currently.