This section of the website describes the four disorders that, along with Obsessive Compulsive Disorder, make up the Obsessive Compulsive and Related Disorders section of the DSM V (Diagnostics and Statistics Manual — the recognized format for the classification of mental disorders used in North America).

Obsessive Compulsive and Related Disorders include:

The five above disorders are considered to be closely related enough to warrant grouping them in their own section in the DSM V.