George Michael has pulled out of the Australian leg of his 'Symphonica' tour, detailing to his fans that the reason he has been forced to cancel the gigs is due to the 'major anxiety' he still feels regarding his recent bout with pneumonia.

George, who performed during the closing ceremony of the Olympics, issued a statement on his own website detailing that the shows he was scheduled to play throughout November and the start of December have had to be cancelled, something that "breaks [his] heart" to do. The announcement on his site also explains that anyone who has purchased tickets for the cancelled shows will receive a full refund.

George Michael is also set to perform nine different concerts in Britain over October, after completing a successful European leg of the tour over the summer. He explains in his fan address that once his leg of shows in the UK are over he will receive "long overdue" treatment for his symptoms.

The former Wham star was admitted into Vienna General Hospital's intensive care unit after being taken ill while on the original leg of his Symphonica tour in 2011. Following the near-death experience Michael was forced to pull out of his scheduled shows in Australia last year, rescheduling them for this November. It is unknown as of now if or when he will be performing in Australia to complete his tour after this latest cancelation.