Dictionary of Cancer Terms
View in Spanish: Respuesta alérgica
Allergic response (uh-LER-jik reh-SPONTS)
A hypersensitive immune reaction to a substance that normally is harmless or would not cause an immune response in most people. An allergic response may cause harmful symptoms such as itching or inflammation or tissue injury.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.