Abnormal performance or operation of an organ or organ system that is not a result of known changes in structure. Contrast with organic mental disorder.
A disorder in which the performance or operation of an organ or organ system is abnormal, but not as a result of known changes in structure.
Condition in which a body part (e.g., an organ) functions (acts or works) abnormally, although it is physically normal; in other words, a disorder marked by symptoms and signs for which no anatomical or physiological cause can be identified.
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.
A mental disorder that cannot be traced to a physical cause.
A health condition with a diagnosable pattern that has no known organic cause.
These illnesses are characterized by impaired physical performance, yet there is no evidence of organic disturbance or physical abnormalities.