Researchers at RMIT University in Melbourne, Australia have devised a diagnostic tool for identifying Parkinson's disease (PD) in patients who may not yet display any motor symptoms. The importance of such a tool lies in the fact that by the time motor symptoms appear, there is usually already irreversible damage to brain tissues. Dinesh Kumar, PhD, the chief investigator on the study, says "many treatment options for Parkinson’s only prove effective when the disease was diagnosed early."

The team at RMIT built custom software that analyzes a patient's spiral-drawing style via pen, paper, and a digital drawing tablet. Although the team admits to some limitations within their initial studies, the 93% accuracy rate of early PD diagnosis is spurring additional research and hope for achieving a reliable diagnostic method for identifying PD early.