Relapses, exacerbations, and attacks are synonymous for new or worsened neurologic symptoms that are the hallmark of relapsing-remitting multiple sclerosis. Management of relapses is not always straightforward. The clinician must distinguish between true relapses, symptom fluctuation, and pseudo-relapses. Risks and benefits of treating a relapse must be considered. Once the decision to treat is made, most clinicians would pursue a course of corticosteroids. Consensus may end there, as there is no clear-cut "best" route of administration or dosing schedule. The patient presenting with their first relapse or clinically isolated syndrome may be at risk for the development of multiple sclerosis. Clinical presentation, CSF findings, and MRI may all give clues as to the risk for future demyelinating events.