American Psychological Association (APA):This is a professional organization representing psychology in the United States. It has over 121,000 members consisting of researchers, educators, clinicians, consultants and students.
International Classification of Diseases (ICD): This is another globally recognized standard diagnostic tool for health management including mental health. It provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings etc.
Psychopathology: This term refers to the study of mental illness or mental distress or the manifestation of behaviors that may be indicative of mental illness or psychological impairment.