The main features of this disorder are a need to maintain control, perfectionism, attention to detail that prevents task completion, and high standards.
Individuals struggling with this disorder experience intrusive and repetitive thoughts, images, or urges that cause them anxiety. Clinically these are called obsessions. For example, an individual may have intrusive thoughts that they have been exposed to germs in some way. In order to manage the anxiety that these obsessions generate the individual may engage in the same behaviour multiple times.