Kim Kardashian's psoriasis has flared up due to stress over her marriage split.

The reality TV star's spouse Kris Humphries is seeking to annul their 72-day marriage on the grounds of fraud causing her skin condition, which is believed to be caused by environmental factors and genetics and was first diagnosed by a dermatologist in July, to return.

A source told National Enquirer magazine: "Turning from Beauty into the Beast is Kim's worst fear. The stress of Kris' charge that their marriage was a fraud isn't helping her condition and she fears the crusty red spots caused by her psoriasis will spread."

Not only has the unsightly itchy, flaky, red rash returned, Kim is also in pain with her condition.

The source added: "It's very painful, especially when Kim lies in bed at night. She's afraid that her spots will soon cover her body and she has cried over it a few times."

In scenes shown on reality TV show 'Keeping Up with the Kardashians' earlier this year, Kim told the skin specialist, Dr. Harold Lancer who made the diagnosis: "I cannot have psoriasis. I've heard of it before, because my mom has always had it. She didn't have red flaky dots all over.

"My career is doing ad campaigns and swimsuit photo shoots. People don't understand the pressure on me to look perfect. When I gain a pound, it's in the headlines. Imagine what the tabloids would do to me if they saw all these spots."