Fifteen-year follow-up of conversion disorder

The terms 'conversion', 'hysteria' and 'conversion hysteria' were used interchangeably to describe a condition characterised by a single somatised symptom, often pseudo-neurological in nature. DSM-III (American Psychiatric Association, 1980) expanded the concept of conversion to generalised symptoms involving loss or alteration of physical functioning suggestive of a physical disorder, along with a clinical indication that the conversion was an expression of psychological conflict or need. The type of symptom or deficit should be specified as: with motor symptom or deficit, with sensory symptom or deficit, with seizure or convulsions, or with mixed presentation (Kaplan & Sadock, 2004).