NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,351 terms related to cancer and medicine.
We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.
- obsessive-compulsive disorder
- listen (ob-SEH-siv-kum-PUL-siv dis-OR-der)
- An anxiety disorder in which a person has intrusive ideas, thoughts, or images that occur repeatedly, and in which he or she feels driven to perform certain behaviors over and over again. For example, a person may worry all the time about germs and so will wash his or her hands over and over again. Having an obsessive-compulsive disorder may cause a person to have trouble carrying out daily activities.