My husband was diagnosed at age 36, now 53, and is progressing very fast now. Is he Parkinson's stage 5?

I’m so very sorry. You absolutely have the worst case scenario. My mom was diagnosed later in life which is a totally different ball game. It’s so much harder with an earlier diagnosis because as you know the disease progresses more rapidly.

Have you discussed surgery options with his neurologist? How is he responding to the meds?

This is something his Dr. should be able to tell u.

Cathy, can you please explain what DBS is? Has he been tested and diagnosed by his physician to confirm that he does have dementia? 53 is pretty young... Also, how will knowing what stage he is in help you or your LO? Just asking because maybe more info from you will be necessary. I'm so sorry your family has all these health challenges...I hope you get answers that will help you!