The MRI changes you mention are not specific to MS. While a MRI is a must in MVA, there may not have been any recent brain injuries. They are basically area of low blood supply or ischemic changes—'chronic small vessel ischemic disease or demyelination'. These changes are seen in multiple sclerosis, Alzheimer's or Wilson's Disease, migraine headaches, diabetes, high blood pressure and high cholesterol. Though they are of no immediate threat, all these causes, and the presence of ischemic changes can be a risk factor for future stroke. Hence, prevention methods should include a healthy lifestyle, and a combination
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Hence, prevention methods should include a healthy lifestyle, and a combination of diet, exercise, and medicines. Please discuss with your treating doctors. Take care!