Janice Dickinson leaving Nobu restaurant. Los Angeles, California - 13.05.09

Dickinson was taken from the Costa Rican jungle set to a nearby medical facility with what has been described as a medical emergency.

A source for the hit show says, "She was taken by ambulance this weekend from camp to an on-site medical facility for treatment for an undisclosed condition."

Dickinson isn't the first cast member to require medical treatment - The Hills star Heidi Pratt was hospitalised and treated for a gastric ulcer before leaving the show last week (ends12Jun09).

Source: WENN