<P>Recent innovations, including deep brain stimulation and new medications, have significantly improved the lives of people who have Parkinson's disease. Nevertheless, they continue to face many challenges. Patients and families have long relied on <I>Parkinson's Disease</I> for reliable advice about medical, emotional, and physical issues. Bringing this trusted guide up to date, three expert neurologists describe</P><P>• New understandings gained by five years of additional intensive research of Parkinson’s disease• A new chapter devoted to exerciseNew information about imaging techniques such as SPECT Scan and DATScan (SPECT) that are aiding in the diagnosis• New findings about the genetics of the disease• Promising uses of new technologies such as tablet devices for people who have trouble communicating• Information about impulse control disorders caused by some drugs used to address the symptoms of the disease• A complete update on treatments such as medications, surgery, and more</P>