Hi. I'm a new subscriber. I live in the Detroit area. My father was dxed with PD about ten years ago. He lives in Arkansas. I'm subscribing to try to get myself a little more educated on what's happening to him. He has gone downhill measurably in the past eighteen months. Now, the doctors are saying he is suffering from "sundown dementia" which involves him acting irrationally at night time (especially when he should be sleeping). Is this a result of the medication he's on or is it just another stage of the disease? Also, I read somewhere that there is a theory that PD may be associated in some patients with a personality characteristic of not being able to express emotions. That fits my Dad perfectly, but is there any truth to this? Don't guess it matters a great deal at this point, but I'm just curious. Guess right now what I need most is just some contact with members of other families that are going through the same thing. Thanks for reading this and for caring. Mark Frost ([log in to unmask])