Psychological Assessments and Diagnostics are indispensable instruments in the realm of mental health. The absence of effective diagnostic procedures and assessment tools would hinder the efficiency and efficacy of clinical and counseling practices. While various Diagnostic Manuals in Psychology outline criteria for the diagnosis of mental disorders, these resources often fall short in providing case studies that offer a deeper understanding of clinical presentations. This book addresses that gap by presenting case studies derived from both clinical and counseling environments, elucidating diagnostic criteria, assessment techniques, case histories, and intervention methods. Consequently, this book proves to be an invaluable resource for mental health professionals, serving as a convenient reference for case history formats, diagnostics, and assessments. Additionally, students and researchers can utilize this resource as a reference while they engage in studies involving clinical populations.