Obsessive-compulsive disorder is a chronic anxiety disorder most commonly characterized by obsessive, distressing, intrusive thoughts and related compulsions (tasks or which attempt to neutralize the obsessions). OCD is distinguished from other types of anxiety, including the routine tension and stress that appear throughout life. The phrase "obsessive-compulsive" has become part of the English lexicon, and is often used in an informal or caricatured manner to describe someone who is meticulous, perfectionistic, absorbed in a cause, or otherwise fixated on something or someone. Both Adrian Monk and Harold Krenshaw have OCD.