NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,122 terms related to cancer and medicine.
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- A condition marked by excessive worry and feelings of fear, dread, and uneasiness that last six months or longer. Other symptoms of GAD include being restless, being tired or irritable, muscle tension, not being able to concentrate or sleep well, shortness of breath, fast heartbeat, sweating, and dizziness. Also called generalized anxiety disorder.