NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,385 terms related to cancer and medicine.
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- listen (SKIT-soh-FREE-nee-uh)
- A group of severe mental disorders in which a person has trouble telling the difference between real and unreal experiences, thinking logically, having normal emotional responses to others, and behaving normally in social situations. Symptoms include seeing, hearing, feeling things that are not there, having false ideas about what is taking place or who one is, nonsense speech, unusual behavior, lack of emotion, and social withdrawal.