Now things have got so bad, these people must put their fears aside and seek help. Katie's with them as they undergo state-of-the-art treatments and see what modern medicine really can do.
Tonight, she'll meet husband and wife, Janice and Greg, whose dental issues are out of hand. They've both got a mouthful of rotten teeth and the overall effect on their health is horrifying. Can Katie and a team of dentists make a difference?
She'll also meet Joanne, who's psoriasis is causing her no end of trouble, Scott whose hairline is fading, and 80-year old Stan who needs an answer to his expanding nose. Can a laser help him out?
Never Seen A Doctor, C4, 10pm
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