List of case descriptions; Preface; Part I. Delusional Disorders and Delusions: Introductory Aspects: 1. Outline and introduction: a brief perspective on the delusional disorders; Part II. Descriptive and Clinical Aspects of Paranoia/Delusional Disorder: 2. Paranoia or delusional disorder; 3. Delusional disorder, somatic subtype; 4. Delusional disorder, jealousy subtype; 5. Delusional disorder, erotomanic subtype; 6. Delusional disorder, persecutory/litigious and grandiose subtypes; Part III. 'Paranoid Spectrum' Illnesses which should be Included in the Category of Delusional Disorder: 7. Paraphrenia and paranoid schizophrenia; 8. 'Late' paraphrenia and late onset schizophrenia; 9. Delusional misidentification syndrome; 10. Folie à deux: an accompaniment of illnesses with delusions; Part IV. Illnesses which are Liable to be Misdiagnosed as Delusional Disorders: 11. Reactive and cycloid psychoses: the acute and transient psychotic disorders; 12. Non-psychotic disorders which may simulate delusional disorders; Part V. Treatment of Delusional Disorder and Overall Conclusions: 13. The treatment of delusional disorder; 14. Conclusions; Index.