The 35-year-old, who also told fans she wants to get anti-aging laser surgery on her hands next, explained that she believes rumours she has had butt implants began when she was photographed after having the treatment.
During a live-stream on her subscription based app and website kimkardashianwest.com on Monday, Kim said her mother Kris Jenner first suspected she had psoriasis when she saw a rash on her daughter's legs.
'I went to go get a cortisone shot in my butt,' Kim recalled. 'I lived right behind Kitson [the boutique in Los Angeles]. One of my neighbours was a dermatologist at Cedars.
'I go in there and he’s like, "There’s a one in a billion chance that you will get a huge indent in your butt." Of course I get a huge indent on my butt.'
Kim explained that she was photographed on two separate occasions where the indent on her derriere was visible.
'There is a picture of me in Miami wearing an electric blue dress, and another picture of me walking down Robertson,' she said. 'You see the indent. And I think that’s when the rumours started, "She’s had implants."'
Kim revealed she still gets the injections, and had one recently.
'Every few years I get a cortisone shot. And it’s so funny,' she said. 'I just got one as my psoriasis was so bad in Vegas.