Hello! I have been diagnosed with cerebellar degeneration for 10.5 years and now I am presenting dramatic cognitive decline (short term memory problems, working memory, executive function, semantic memory problems, visual-spatial, etc). In addition to cerebellar ataxia , i have aphasia, both got better, including swallowing problems, during the past year and a half. In MRI they found two bilateral periventricular FLAIR Hyperintensities in 2009 and now an additional one in the external capsule. Also I realized very recently that my hypertension is not controlled and I doubled the medication but that doesnt t always help. Mt thinking is that I have developed a Vascular dementia and I think it is Binswamger s disease. I am 46 years old. What is the life expectancy and prognosis of this disease?