Sleep quality as prodromal PD symptom

Although the above link only leads to an abstract, there is enough information to accept their conclusion that “in the general population, deterioration of sleep quality and duration are markers of the prodromal phase of parkinsonism, including Parkinson’s disease.”

Restless Legs Syndrome and whether or not it is improved by DBS is apparently not a matter of consensus RLS improved by DBS although, again, this is not a full text article.