For Some, Smell Test May Signal Parkinson’s Disease up to 10 Years Before Diagnosis
American Academy of Neurology (AAN)A simple scratch-and-sniff test may one day be able to help identify some people at greater risk of developing Parkinson’s disease up to 10 years before the disease could be diagnosed, according to a new study published in the September 6, 2017, online issue of Neurology®, the medical journal of the American Academy of Neurology.