A Hamilton teenager suffers from an extremely rare disorder that is causing serious disruption to her life.

Kaitlyn Terrana, 17, is believed to suffer from what is known as Kleine-Levin syndrome, or KLS.

It’s a condition that plunges her into frequent episodes where she will sleep for days at a time and be unable to continue her normal routines.

It has been described as Sleeping Beauty syndrome, but Terrana says it is nothing short of a nightmare.

"They think of a nice little princess lying there," Terrana told CBC News in a recent interview.

"Our mood changes, we act out, we’re nothing like ourselves."

Click on the video above to see a full report from the CBC’s Nil Koksal.