1. Scientists Zero in on Brain's 'Stopwatch' - US News and World Report
Timing mechanisms in brain cells may hold clues for Parkinson's treatment, researchers say

2. Gene Behind Gaucher Disease a Player in Parkinson's - US News and World Report
Finding from worldwide study could one day lead to new treatments

3. Parkinson's Disease Tests - US News and World Report
No lab tests or imaging procedures can definitively confirm a diagnosis of Parkinson's.

4. Secondary parkinsonism  (Trust Mark: Doctor-Reviewed)
Secondary parkinsonism is similar to Parkinson's disease, but it is caused by certain medicines, a different nervous system disorder, or another illness. • Reviewer: Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

5. Parkinson's disease  (Trust Mark: Doctor-Reviewed)
Parkinson's disease is a disorder of the brain that leads to shaking (tremors) and difficulty with walking, movement, and coordination.• Reviewer: Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.