Former US President and Donald Trump's rival, Joe Biden, has appeared in public with a wound on his head – soon after undergoing a surgery for his skin cancer diagnosis Biden has been seen with a wound on his head (Image: William Bretzger-Delaware News Journal / USA TODAY NETWORK via Imagn Images)

Former US President Joe Biden has undergone surgery to treat skin cancer. The procedure has sparked further concern over the health of the 82-year-old Democrat who has faced a string of medical challenges since leaving the White House. ‌

The former commander-in-chief recently underwent Mohs surgery, a delicate procedure that involves cutting away thin layers of skin until no trace of cancer remains. Officials did not disclose further details, but Biden was seen in recent days with

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