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I have been on betaseron for nearly two yrs, I had a recent MRI Brain that shows a new 4 mm lesion in the left thalamic area of my brain, does this mean the meds stopped working? Thanks.

Question Date: 8/28/2012


No medicine is perfect and people continue to have new MRI white spots despite therapy. It sounds like the Betaseron has been working for awhile and the decision of whether to switch is a lot more complicated than whether there is a new lesion or not -- this is why it is so important for you to talk to your neurologist about how you are doing.

Answer Date: 8/28/2012


Daniel Kantor, MD


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