"Celebrity Big Brother" star Janice Dickinson suffered an allergy attack and collapsed as cameras rolled on the British reality series this week.

The 60-year-old star's medical scare began when Dickinson entered the Diary Room to alert producers that she was having an allergic reaction to a bee sting and needed her EpiPen immediately, the Daily News reports.

"I don't want this to reach my heart," she reportedly told a staff member. "My hand is turning black. It's going up my hand."

Shortly afterward, Dickinson suffered a seizure and collapsed onto the floor.

After receiving treatment, she returned to "Big Brother" a few hours later, where she thanked her "amazing, generous doctors."