The main difference between obsessive-compulsive personality disorder (OCPD) and obsessive-compulsive disorder (OCD) is that __________.

People with OCD often recognize that their obsessions or compulsions are excessive or unreasonable, even though they may find them difficult to control. OCPD is a personality disorder involving a longstanding pattern of perfectionism and control; people with it may see that pattern as appropriate rather than as a disorder. Therefore, the correct choice is “people with OCD know their disorder is irrational.”

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