Geraldine Bednash Ph.D., RN, FAAN

Geraldine Bednash Ph.D., RN, FAAN, Has been the executive director of the AACN since 1989. She serves as the vice president of nursing of Health Professions Education Council of the Association of Academic Health Centers and is a member of the editorial boards of several nursing publications.

Books
	Ask a Nurse An allergy is a hypersensitivity to a normally harmless substance. The body's immune system perceives these substances, called allergens, as harmful and reacts accordingly. White blood cells produce antibodies that neutralize the allergen.