Can deep brain stimulation treatment help parkinson's patients with more than the shaking?

Yes: Deep brain stimulation can help patients with all three cardinal motor symptoms of Parkinson's disease, including tremor, rigidity (or stiffness), and slowness (bradykinesia). It does not help with non-motor symptoms, balance problems, or freezing.

Further Detail: Deep brain stimulation therapy of the stn (sub-thalamic nucleus) or gpi (globus pallidus interna) can greatly improve "on" time (good function with minimized symptoms) & greatly reduce dyskinesia (twisting, writhing, jerking movements during "on" time). Good candidates must be not demented, psychiatrically stable, & still demonstrating good symptom relief from meds, but with inconsistent results.