How Is OCD Severity Rated?

Read Transcript

We are very interested in normally diagnosing OCD, differentiating it from other disorders, but also rating the severity. It's about 25 years ago I developed a rating instrument for assessing OCD and rating symptoms severity, and that's called the Yale-Brown Obsessive Compulsive Scale or the Y-BOCS.

And that scale ranges from zero, which is no symptoms, to 40 which would be extreme. The Y-BOCS which measures symptoms severity assesses how much time the patients spend occupied by obsessions and compulsions, how distressing those symptoms are, how much they interfere with their functioning, how much they can control them.