Is her jet set lifestyle becoming too much?
Kendall Jenner has opened up about a mystery health condition that is plaguing her.
The reality star revealed she may be suffering from sleep paralysis in a new preview of Keeping Up With The Kardashians.
"I wake up in the middle of the night and I can't move," she says in the teaser for the E! show.
Her mother Kris Jenner can be heard telling her over the phone: "I think you've just got anxiety."
Wearing a white bathrobe, Kendall replies: "Everyone says I'm fine, but I don't feel fine."
In a preview clip released earlier in October the model lashed out at her family for not taking her health concerns seriously.
"I'm done arguing with people because I don't feel fine," she ranted.
"I promise one day when I'm rushed to the hospital, then you guys are going to wake up."
The episode of the show was filmed during the lead up to Fashion Weeks in London, Paris and Milan - but the model did not take part in any of the events.
Kendall is no stranger to health problems.
Last December she revealed she had been rushed to hospital suffering from exhaustion.
She wrote on her blog that it was "definitely a wake-up call that I need to take better care of myself".