In Touch exclusively revealed that Kim Kardashian was diagnosed with a mystery illness — and her loved ones are very worried about the reality star.

While Kim has yet to disclose any details surrounding her health condition, they are aware she is battling something serious.

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"At this point, friends have heard she's sick, but they're in the dark and calling it her 'mystery illness,'" says a source. "[They've] been calling her and stopping by and making sure that she's okay, because between her illness and [her husband] Kanye [West]'s breakdown and even her own breakdown, she's in terrible shape."

MORE: Find out How Kanye West Reacted to Kim Kardashian's Mystery Illness

The insider adds that Kim's mother, Kris Jenner, has been helping her out with her children, North and Saint, while she recovers.

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