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pathophysiology. noun. 1  The functional changes associated with or resulting from disease or injury. 2  The scientific study of such changes. 3  In both senses also called physiopathology.
Psychopathology is the scientific study of mental disorders, including efforts to understand their genetic, biological, psychological, and social causes; effective classification schemes (nosology); course across all stages of development; manifestations; and treatment.efore diagnosing a psychological disorder, clinicians must study the themes, also known as abnormalities, within psychological disorders. The most prominent themes consist of: deviance, distress, dysfunction and danger. These themes are known as the four Ds, which define abnormality.