The Queen guitarist was due to perform a series of concerts across the UK in December with singer Kerry Ellis but has been forced to postpone them as the illness has been "destroying his energy and his will", reported Contactmusic.
He wrote on his official website: "We're very sad today to announce the indefinite postponement of our 'candlelight' concert dates this coming December. This is a decision I've agonised over, but in the end it has become inevitable.
"I've been strongly advised to rest and heal, rather than go out and risk 'falling down on the job' out there, which would be a real tragedy. I'm convinced it's much better taking the step to cancel the dates now, refunding the fans for the ticket sales, and giving all our team a chance to re-plan their time in December. Sincere apologies to all.
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