Answer by  
                                                                                          newgeneration (699)
                                                            
                          
                          
                                                          Progressive dementia can be a sign of Alzheimer's Disease. Depending on the nature of the dementia, it can also indicate Binswanger's Disease, strokes or a series of mini-strokes, Huntington's Disease, Parkinson's Disease, hydrocephalus, or infections that affect the central nervous system, like AIDS or Creutzfeldt-Jakob Disease.