Sorry to hear the news of DH's dx...but now they can get going on slowing down progression.
Requip is great for the periodic limb movements. Carbidopa-levidopa also helps increase dopamine transmission in the brain.
They're also doing a lot of brain stimulation to help with nerve enervation.

I hope that your DH is proactive in the fight...there is much on the horizon for Parkinson's patients.

Take care of yourself, too though...you both have a hard hand to deal with...