In about 90% of patients with Parkinson's disease,there is clear evidence that the disease was caused by
A) genetic factors.
B) a stroke.
C) a tumor.
D) a neurotoxin.
E) none of the above

Question

Quizplus · Accepted Answer

In about 90% of patients with Parkinson's disease, the cause is not clearly linked to genetic factors, strokes, tumors, or neurotoxins. Most cases are considered idiopathic, meaning the exact cause is unknown.

In About 90% of Patients with Parkinson's Disease,there Is Clear