What you’ll learn to do: describe obsessive-compulsive and related disorders
![A person with their head down and touching their forehead with their right hand.](https://s3-us-west-2.amazonaws.com/courses-images/wp-content/uploads/sites/5351/2020/07/07002811/vic-tor-nappy--300x200.jpg)
In this section, you will learn about obsessive-compulsive disorder and other disorders related to this category. These are a group of disorders in which a person experiences both an obsession (uncontrollable, reoccurring thoughts) and a compulsion (behaviors that create an urge to repeat an action over and over). OCD and its related grouping of disorders are chronic, often caused by a dysfunctional response to stress, and interfere with a person’s normal daily functioning. These OCD-related disorders include body dysmorphic disorder, hearing disorder, trichotillomania, and excoriation. Each one of these disorders has a unique presentation of symptoms that we’ll examine more closely in the following pages.