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A Scottish woman is one of only a handful of people in the world known to have a rare genetic mutation that causes her to barely feel any pain, geneticists found.
Jo Cameron didn't realize she was different until she underwent hand surgery at 65. Researchers are now trying to unravel the secrets of her DNA to treat others.
Jo Cameron, from Whitebridge, near Inverness, has experienced broken limbs, surgery and childbirth - with no need for drugs.
Jo Cameron has never felt the need for pain medication. She is one of only two known individuals who carry a unique gene that enables her to live without physical discomfort.