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Authors

  1. Aschenbrenner, Diane S. MS, RN

Abstract

* A patient contracted progressive multifocal leukoencephalopathy (PML) and died after taking dimethyl fumarate (Tecfidera) to treat relapsing multiple sclerosis.

 

* Patients who take dimethyl fumarate and develop any new or worsening weakness on one side; trouble using the arms or legs; or changes in thinking, eyesight, strength, or balance should contact their prescriber immediately for evaluation.