Dementia is the general heading that includes all types of Dementia including Alzheimer's type Dementia, Pic's Type Dementia, Alcohol Dementia, Parkinson Dementia, Vascular Dementia and Strokes.
The fact is they all share the same clinical signs and symptoms of cognitive impairment; memory loss, paranoia, delusions, and or lack of insight and judgment. There are some pathological differences in how the brain is affected but in most cases the cause is multi factorial with many types of brain pathology occurring as people age. Young people tend to have single type pathology but in general seniors tend to have a mixed picture, which makes any one label less reliable.For more information,you can Visit : https://goo.gl/8qCkOf