It is not always easy to know what to say to people such as yourself seeing someone you care about being newly diagnosed with Parkinson’s - about which you probably know little if anything - and then apparently watch them crumble before your eyes. You don’t say how long the road has been to reach this point but whether long or short the actual diagnosis can and does hit many very hard. I am no doctor so I can only offer a personal view but it may be that at least in part what you are seeing as physical change might be due to his struggle to understand/accept what has happened. The brain is an extremely powerful tool and Parkinson’s brain, as I call it, sometimes seems to have a logic all of it’s own. Whether or not that is so with your dad you are clearly having a hard time right now. I have lived with my diagnosis for what will be 12 years come December and you will find as I did, that almost everything connected with the condition is slow. Parkinson’s means living with symptom control, there are a number of medications and one size definitely doesn’t fit all. It can and often does take time to find the right regime and one week on is no time at all. Hopefully your dad’s medication will get sorted and you will see some benefits before too long. In addition to the advice given by Janice P, I would add the following points based on my own experience and what I have picked up from the experience of others which may help.
Don’t be tempted to read everything you can lay your hands on at the moment. It can lead to information overload and give a distorted negative picture that’s of no help in the early days.
Having said that it’s important you understand what is being proposed so note down any questions so you don’t forget, and get the answers from reliable sources such as your dad’s medical team, his GP, the helpdesk and yes I include the forum in that.
Don’t be afraid to go back to the consultant if you are worried and be prepared to be a bit tenacious if needs be - it’s not been my experience but several forum members have had problems in contacting their consultant.
Find out if there is a local Parkinson’s nurse and support group both can provide good support.
I strongly believe that a positive mindset is crucial. It’s not everyone’s way and we can each only manage our Parkinson’s with what feels right for us as individuals. There are no right and wrong ways only the way that suits.
You wanted hope. Well I’m not going to pretend it’s always a bundle of laughs, it can be challenging and frustrating and sometimes I feel like I spend my life explaining because Parkinson’s is generally not well understood; on the other hand it’s not all doom and gloom either. As I said nearly 12 years on, my symptoms are pretty well controlled, I live alone and pretty much manage everything myself - I arranged privately 2 hrs help a week with a very flexible arrangement and that’s worked well for several years. Basically I just get on with the business of living and just make adjustments as they are needed - it is slow moving in most so there is usually time to get something sorted. My own approach is to say, I have Parkinson’s it doesn’t have me, I am first and foremost Tot who happens to have Parkinson’s - I never give it top billing.
It is very early days for your dad so take heart. We’ve all been there and survived there’s no reason to think your dad will be any different once he’s negotiated the current rocky road.
Take care, good luck and hang on in there.