Obsessive compulsive disorder (OCD) is not about perfectionism. It entails obsessions (recurrent and intrusive thoughts) and compulsions (repetitive behaviors performed to alleviate the anxiety stemming from the obsessions). Despite the stereotype, nothing about this diagnosis requires perfectionistic tendencies.

Obsessive compulsive personality disorder (OCPD) however does entail pervasive pattern of preoccupation with orderliness and perfectionism.
Note: These are two distinct diagnoses.

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