Clashing Diagnostic Approaches: DSM-ICD Versus RDoC

Area of Science:

• Psychiatry and Mental Health Classification
• Neuroscience and Psychopathology Research
• Scientific Methodology in Clinical Research

Background:

• The Diagnostic and Statistical Manual of Mental Disorders/International Statistical Classification of Diseases and Related Health Problems (DSM-ICD) has dominated psychiatric classification.
• This system views mental disorders as discrete entities with distinct symptoms and histories.
• Anomalies within the DSM-ICD system have prompted the development of alternative classification models.

Purpose of the Study:

• To introduce the Research Domain Criteria (RDoC) initiative as a competing vision to the DSM-ICD system.
• To highlight RDoC's Galilean approach, viewing psychopathology as resulting from neural circuitry dysfunctions.
• To identify critical challenges hindering the realization of RDoC's scientific potential.

Main Methods:

• Analysis of the conceptual underpinnings of DSM-ICD and RDoC classification systems.
• Identification and categorization of challenges facing the RDoC initiative.
• Literature review and theoretical comparison of Aristotelian and Galilean approaches to psychopathology.

Main Results:

• The DSM-ICD model is characterized by an Aristotelian view of discrete disorder entities.
• The RDoC initiative offers a Galilean perspective, focusing on neural circuitry dysfunctions.
• Three sets of challenges—conceptual, methodological, and logistical/pragmatic—are delineated for RDoC.

Conclusions:

• The RDoC initiative presents a promising alternative for mental illness classification.
• Addressing the identified conceptual, methodological, and logistical challenges is crucial for RDoC's success.
• Further research is needed, potentially exploring a synthesis of Aristotelian and Galilean approaches in psychiatric classification.