NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,363 terms related to cancer and medicine.
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- 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.