This neurosis is characterized by an involuntary psychogenic loss or disorder of function. Symptoms characteristically begin and end suddenly in emotionally charged situations and are symbolic of the underlying conflicts. Often they can be modified by suggestion alone. This is a new diagnosis that encompasses the former diagnosis "Conversion reaction" and "Dissociative reaction" in DSM-I. This distinction between conversion and dissociative reactions should be preserved by using one of the following diagnoses whenever possible.