Obsessive-Compulsive Disorder (OCD) is characterized by the presence of persistent, intrusive thoughts (obsessions) and repetitive behaviors or mental acts (compulsions) performed to relieve the anxiety associated with the obsessions. It's essential to understand the nuanced relationship between obsessions and compulsions, as well as their effects on daily functioning.
Consider the following case study: A 32-year-old woman has spent years believing that her lack of cleanliness could lead to catastrophic consequences for her family. As a result, she engages in ritualistic handwashing and sanitizing her home excessively, devoting several hours daily to these activities, often interrupting her work and social life. This demonstrates a pattern consistent with OCD. Based on your understanding of this disorder and its associated phenomena, which of the following characteristics is most indicative of a person experiencing a severe form of Obsessive-Compulsive Disorder?