It's not easy to talk to people about medical issues, especially with something like Parkinson's, especially when they've seen the later stages.
I know when my parents saw my finger twitch at age 40 (I'm all but 48 now - diagnosed at 45), I was also in hiding / denial. When my moment came years later, I went in thinking it was something else I was misdiagnosed on and then it was there. It was a heavy moment, but like many things, we confront them and fight back, knowing there are good days and bad days. However, treatment and medicine now can be helpful in the early stages.
Twitchy Woman makes a lot of good points about the benefit of treatment early. A solid neurologist can make all the difference. I'm thankful for mine.
Being supportive, active, and positive, both as a caregiver and "Parkie" is important. Diagnosis is a big pill to swallow. I call that moment "Avalanche Day." That said, we all have these moments in life, though in different ways as life throws us curves, but we're able to work through them in our own way. I wish you luck in helping your husband find his way. Perhaps building him up to a discussion could help cross that bridge if it's something that could be too much in the moment.
I want to thank you for your request for info. Just the fact that you're here asking shows how much you care for him. I wish you the best possible outcome in this journey. Please let me know if I can be of any assistance going forward.
Dan Parkinsonsdisease.net team