My wife was diagnosed with PD 2 years ago. Since then, she is on medication but feels getting worse. Her doctor says that her symptom is still light and he gives her weak medication. She wonders if a brain surgery is a effective treatment to stopping her progress. Her doctor does not necessarily recommend her to do it for there is not enough data and cases to verify the effectiveness of the surgery. Is there anyone who can answer to the following. questions; - Is the surgery effective? - Is there any risk and side effect of the surgery? - Is it true that surgery is effective when performed in early stage of PD? Thanks in advance. Masao [log in to unmask]