“The majority of people don’t believe I have an illness,” says Suzy. The former body double and actress says she came down with a “mysterious illness” 10 years ago that she claims forces her to consume a minimum of 7,000 calories a day.

TELL DR. PHIL YOUR STORY: Has life gone from total success to complete mess?

“My friends and family think that it’s in my head,” she continues. Suzy claims that if she doesn’t constantly eat, she will start to tremble and convulse. She says she has been to over 20 doctors trying to figure out what’s wrong with her but never received a satisfactory diagnosis.

WATCH: Woman Claims Friend With ‘Mysterious’ Illness Wants Validation That She Is Ill

“I’m surprised to hear you describe this as a ‘mysterious illness’ because it’s really not mysterious at all,’ says Dr. Phil in the video above. What does he say could be going on?

This episode of Dr. Phil airs Thursday. Check here to find out where you can watch.

TELL DR. PHIL YOUR STORY: Life in crisis?