Contents: 1. Basics. 2. Schizophrenia spectrum or other primary psychotic disorders. 3. Mood disorders. 4. Neurotic, stress-related and somatoform disorders. 5. Substance-related and addictive disorders. 6. Neurocognitive disorders (organic mental disorders). 7. Personality disorders. 8. Eating disorders. 9. Sleep disorders. 10. Sexual disorders. 11. Child psychiatry. 12. sychoanalysis. 13. Miscellaneous The new edition is significantly different from the older ones, primarily as it has been updated with the newly released International Classification of Diseases -11 (ICD-11). ICD releases new versions after decades, and hence it is big news in the field of psychiatry. It is extremely important for students to keep themselves updated with ICD-11 changes as they are likely to be asked in the examinations. Apart from ICD-11 changes, newer topics such as Mental Healthcare Act, POSCO Act and others have also been included in this updated edition to keep the students abreast with changing pattern of postgraduate entrance examinations. The questions based on updated and revised AIIMS pattern have also been included in each chapter.