Dr Dianne Campbell Lefevre, MB ChB FRCP FRCPsych, worked for 40 years with patients with mental illness including intensive work with people with psychoses. She worked initially as a physician and later as a Consultant Psychiatrist and a Consultant Psychiatrist in Psychotherapy. She ran an MSc course in the Psychodynamics of the Psychoses for 6 years. She is interested in the multiple factors contributing to the genesis, course and effective management of mental illness and in particular in the psychoses and their relationship to PTSD, OCD, BPD and DID.