House M.D.2004

Nadia:
[House moves her cup] Why are you doing that?

Dr. Gregory House:
More important question is, why are you?

Nadia:
[moves her cup back] It's just a habit.

Dr. Gregory House:
It's a habit that compels you in an obsessive way that's so bad it's a disorder.

Nadia:
I don't have OCD.

Dr. Robert Chase:
Each brain with OCD has its own way of filtering it. Some people wash their hands and hoard TV Guides, you do puzzles and hoard memories.

Dr. Gregory House:
So what we thought was a gift, was just you literally obsessing over your own life.

Nadia:
That's why I can't stop the memories even when I try. But everything else? My kidneys...

Dr. Gregory House:
Your memory was a symptom of a symptom of a larger disease. You have McLeod's syndrome. It's rare genetic disorder that affects the nervous system, blood and can cause OCD.