Sir Dave Dobbyn has announced he has been diagnosed with Parkinson's Disease.
The 'Welcome Home' singer posted the news on his social media.
However, the 'Slice of Heaven' icon has said the diagnosis has given him "a wider appreciation of life" and that it'll be "business as usual".
"I have felt a little shaky for a while now and in July I was diagnosed with Parkinson's Disease.
"I've found it gives me a wider appreciation of life. Of late I have a tremor in my right hand which gives my guitar playing a new kind of twang.
"I have to do what I love, so it's business as usual and on with the show, singing all the way," Dobbyn said.
"My great band arrives in the studio tomorrow ahead of our jaunt to Brisbane for the UB40 (Ali Campbell) show. All good. See you there, Brizzy. Love DDx."
Dobbyn is due to play with the reggae legends at Brisbane's Sandstone Point Hotel in Australia on Saturday October 8.
Support for the 'Loyal' singer has already flooded in, with many fellow musicians commenting on his social media posts on Wednesday (local time).
Among them was Anika Moa, who wrote: "We all love you! Shaky and proud."
Opshop's Jason Kerrison also wrote "Love you Dave. You're an inspiration in so many ways man. Play on Sir!"
Dobbyn, 65, was promoted to Knight Companion of the New Zealand Order of Merit, for services to music in the 2021 New Year's Honours List.