Also found in: Dictionary, Thesaurus, Encyclopedia.
1. pertaining to or fulfilling a function.
2. affecting the function but not the structure.
functional disease (functional disorder) a disease or disorder of physiological function having no known organic basis. Although not strictly correct, the term is often used in psychiatry for disorders that are psychogenic and in other branches of medicine to refer to any that are idiopathic.
functional method a type of nursing care delivery system; see nursing practice.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
a disorder characterized by physical symptoms with no known or detectable organic basis. See: behavior disorder, neurosis.
Farlex Partner Medical Dictionary © Farlex 2012
func·tion·al dis·or·der, functional disease (fŭngk'shŭn-ăl dis-ōr'dĕr, di-zēz')
Disease characterized by physical symptoms with no known or detectable organic basis.
Medical Dictionary for the Dental Professions © Farlex 2012