Corroborating premorbid dissociative symptomatology in dissociative identity disorder

Clinicians are often cautious about making the diagnosis of Dissociative Id entity Disorder (DID). The existence of corroborating evidence that symptom s of DID existed prior to assessment may address concerns about the genuine ness of individual cases. The authors report the results of a survey of cli nicians to determine the frequency of corroboration that clients' DID sympt oms existed prior to being diagnosed or prior to therapy. On the basis of 4 46 cases of DID, clinicians reported some form of corroboration (e.g., repo rts from family, medical records) in 73% of cases for symptoms prior to dia gnosis and in 67% of cases for symptoms prior to therapy.