I was totally blown away reading a brochure about this and it refered to Parkinson's Disease. I asked the PD MD and he said yes almost everyone that has PD has Seborea dermatitis. Does everyone on the list have it? My dad has PD and has had it as long as I can remember. I also have it but not PD. Please everyone discuss if they do or do not have it and if so how long have they had it ie. several years before PD onset or after PD onset. I find this very interesting and have never seen this discussed on the list. Thank you for responses. Deeann