Health A-Z


Clinical Definition Cancer is not a single disease, but the general name that applies to more than 100 diseases. Each cancer has in common abnormal cells that grow in an uninhibited way and in the process, possibly forming tumors (i.e., abnormal growth of tissue). Cells become cancerous due to deoxyribonucleic acid (DNA) damage. In every

Canker Sore

Clinical Definition Canker sores, also known as aphthous ulcers, are painful oral sores that are typically red in color but sometimes with a white, yellow or gray center. Traditionally less than a millimeter in diameter, they appear on the inside of the lips, inside the cheeks, under the tongue or at the base of the

View Terms Beginning with "D"