Also found in: Dictionary, Thesaurus, Encyclopedia.
an obsolete term once used to denote schizophrenia and other severe mental disorders before modern science discovered a biological component to some aspects of each of the disorders.
Farlex Partner Medical Dictionary © Farlex 2012
func·tion·al psy·cho·sis(fungkshŭn-ăl sī-kōsis)
Mental disorder that does not have a verifiable physical cause.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
A psychosis in which there is no apparent pathology of the central nervous system.
See also: psychosis
Medical Dictionary, © 2009 Farlex and Partners