Alzheimer's dementia is unremitting, causing a consistent decline in cognitive function. There is no reversing the dementia of Alzheimer's disease. On the other hand, PD dementia may come and go. Although there is a downward spiral in cognitive ability, the patient may suddenly function quite normally for a time. My husband, who had end stage PD, always knew my name and my children's names even though he could barely talk. On occasion he would show remarkable reasoning ability - even in the last days of his life. For the most part he suffered from terrible dementia - but he had flickers of cognitive function. My friends who have lost their loved ones to Alzheimer's disease report that once their loved ones lost a cognitive function, it never returned. I'm sure that the picture an change from individual to individual. There is a Parkinson's Plus syndrome which some refer to as Lewy Body Disease where severe cognitive decline is similar to Alzheimer's Disease. -------- God bless Mary Ann (CG Jamie 68/28 with PD, died 11/20/07) www.bentwillowfarm.org > Is there a way to distinguish Parkinson's related dementia from > Alzheimer's? > > ---------------------------------------------------------------------- > To sign-off Parkinsn send a message to: > mailto:[log in to unmask] > In the body of the message put: signoff parkinsn ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn