NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,942 terms related to cancer and medicine.
- listen (FEK-soh-FEH-nuh-deen)
- A drug used to treat certain allergy symptoms. It blocks a chemical released during an allergic response that causes itching, sneezing, runny nose, wheezing, and watery eyes. It is a type of antihistamine. Also called Allegra.