This book demonstrates how attentive listening, perception, and targeted questioning can lead to an accurate diagnosis according to ICD-10 (International Classification of Diseases, 10th revision). After a general introduction to the diagnostics of mental disorders and general psychopathology, the specific section focuses on commonly encountered disorders in practice, such as depression, anxiety syndromes, adjustment disorders, and personality disorders. In addition to critical explanations regarding the handling of diagnostic concepts, numerous case studies illustrate and complement the volume.