The widow of a man who suffered with Parkinson's has triggered new research this week into the condition after she discovered she could "smell" the disease.
Joy Milne, 65, told researchers that she had noticed a change in the odor of her late husband, Les, years before he developed symptoms of Parkinson's.
He passed away from the disease, a nervous system disorder whose symptoms include shaking and slowness of movement, earlier this year at the age of 65.
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"I've always had a keen sense of smell and I detected very early on that there was a very subtle change in how Les smelled," Milne, from Perth, Scotland, said on Thursday.
"It's hard to describe but it was a heavy, slightly musky aroma. I had no idea that this was unusual and hadn't been recognized before."
About one in 500 people suffers from Parkinson's, a degenerative illness that is difficult to diagnose and for which there is no cure.
She went on to tell researchers, who dubbed her "super-smeller" after finding that she could identify Parkinson's sufferers from T-shirts they had slept in.