My 74 year old father has had Parkinson's since he was 40 and just had a drastic change, what should I expect?

Fballfan and Talkey,
The one thing that I learned about Parkinson's, is that it is natural to decline, and then rally.
So, in answer to your question.......What can I expect?

You can expect him to rally!

Can you get the doctor to order massage so he can walk again?

Thank you, gladimhere -- I appreciate your kind words. He's been thru the UTI check and complete blood work-up. He really was only on vitamins and a mild anti-depressant besides his carbidopa/levadopa, so meds weren't the issue either. They said it's just part of the normal progression of the disease. He is now taking meds for the hallucinations and has become a 3-person assist to transfer.

Talk, thinking of you and dad on this journey. Hoping they are able to keep him comfortable. It may take a few days for them to figure out what will help him.

Dad's decline was about 5 weeks ago, and it was truly overnight. He's 84 and 10 years diagnosed. Because of his weight loss, he has been placed on hospice. The worst part of it all was that he had violent hallucinations and believed he had been beaten and much, much worse. He's not eating more than a couple of bites of food each day now, but he's still drinking some.

Here is a list of anticholinergic drugs, but I would look for Haldol/haloperidol on his list of meds

peoplespharmacy.com/2017/05/04/where-can-i-find-a-list-of-anticholinergic-drugs

Ask for a list of meds that he is on or has taken recently. Then go to the website for Lewy Body Dementia or Parkinson's Dementia. They are closely related diseases and some researchers believe that they are the same disease.

Anyway, there are certain medications that cause Neuroleptic Malignant Syndrome, which is quite dangerous for these patients. Any anticholinergic drug can also be dangerous for Lewy patients. My DH was hospitalized and they gave him Haloperidol, and it caused these symptoms. Only after the hospitalization was he diagnosed with Lewy Body Disease.

They checked for infections in the hospital and did a CT scan, the only thing they found while he was in the hospital was a blood clot in his leg which they are treating - I'm hoping it's the medicine mixing in and causing this and it will pass, but I just don't know how it could get this bad so quick.

Have they checked him for a urinary tract infection (UTI)? my mother-in-law with Parkinson's had multiple ones this year, and they left her delirious and in so much pain she could not move. Incontinence is a problem with Parkinson's patients - she also has chronic constipation and had to be manually disimpacted at great pain this year. She is now living in a skilled nursing facility/nursing home with a catheter, but her brain is functioning better and she has fewer infections.