Can you tell me about MUMS? I ve only read about it, yesterday but, from what I read, it seems to fit my symptoms. Is there a specific test to rule it out? I had an MRI done a week ago, and it was one of the most painful experiences I have ever had. It appears to have brought on the symptoms I have which were, vertigo, loss of equilibrium, my right side was so weak that when I tried to get off the table I almost fell, twice. They finally had to get a wheelchair. My vision was blurred and the photosensitivity I usually have, seemed worse. What caused this reaction? I have had many MRIs but, not with this severe reaction.