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It is now possible to diagnose Parkinson's disease prior to physical symptoms appearing, thanks to a new tool developed by .

The tool offers聽hope for more effective treatment of the condition.

There are currently no laboratory tests for Parkinson鈥檚 and by the time people present to a neurologist with symptoms, nerve cells in their brains have already suffered irreversible damage.

The RMIT University research team behind the new diagnostic software 鈥� which works with readily available technologies and has an accuracy rate of 93% 鈥� hope it could one day be used as a standard screening test to spot the condition in its earliest stages.

Chief investigator Professor Dinesh Kumar said many treatment options for Parkinson鈥檚 were effective only when the disease was diagnosed early.

鈥淧ushing back the point at which treatment can start is critical because we know that by the time someone starts to experience tremors or rigidity, it may already be too late,鈥� Kumar said.

鈥淲e鈥檝e long known that Parkinson鈥檚 disease affects the writing and sketching abilities of patients, but efforts to translate that insight into a reliable assessment method have failed 鈥� until now.

鈥淭he customised software we鈥檝e developed records how a person draws a spiral and analyses the data in real time. The only equipment you need to run the test is a pen, paper and a large drawing tablet.

鈥淲ith this tool we can tell whether someone has Parkinson鈥檚 disease and calculate the severity of their condition, with a 93%聽accuracy rate.

鈥淲hile we still have more research to do, we鈥檙e hopeful that in future doctors or nurses could use our technology to regularly screen their patients for Parkinson鈥檚, as well as help those living with the disease to better manage their condition.鈥�

More than 10 million people worldwide are estimated to be living with Parkinson鈥檚 disease, including 80,000 Australians. Parkinson鈥檚 is the second most common neurological disease in Australia after dementia, with about 20% of sufferers under 50 years old and 10% diagnosed before the age of 40.

The research was published in the journal聽. To see a video on the research, click .

Image credit: 漏stock.adobe.com/au/viperapg