BBC News | Alzheimer's, Parkinson's Skin Test: Early Promise WebMD Compared to healthy people and those with non-Alzheimer's dementia, the Alzheimer's and Parkinson's patients had seven times higher levels of a protein called tau. The researchers also found that Parkinson's patients had eight times higher levels of a ... Skin may help spot Alzheimer's and Parkinson's disease A Simple Skin Test May Detect Alzheimer's Skin Test May Soon Be Used To Detect Early Signs Of Dementia |