functional disorder

functional disorder
a condition in which a patient complains of symptoms for which no physical cause can be found. Such a condition is frequently an indication of a psychiatric disorder. Compare organic disorder.

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a disorder of physiological function having no known organic basis. Although not strictly correct, the term is often used in psychiatry as roughly equivalent to “psychogenic disorder”; in other branches of medicine, to “idiopathic disorder.”

Medical dictionary. 2011.

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