Conversion disorder is a psychiatric condition in which a person develops physical symptoms that are not under voluntary control and are not explained by a neurological disease or another medical ... Conversion disorder is a former psychiatric diagnosis that involves abnormal sensory or motor symptoms triggered by psychological stress. It is now partly replaced by functional neurological symptom disorder, which does not require a stressor or feigning. Conversion disorder is a type of mental disorder in which a wide variety of sensory, motor, or psychic disturbances may occur. It is traditionally classified as one of the psychoneuroses and is not dependent upon any known organic or structural pathology. Conversion disorder (aka functional neurological symptom disorder) is a psychological condition that causes symptoms that appear to be neurological.