Due to a variety of factors, such as increased societal attention to mental disorders, cultural and societal interpretations, inconsistencies in diagnosis criteria, continuing research on mental disorders, and others, categorizing mental disorders is not always consistent. Depending on the source used, certain diagnoses or disorders may be categorized differently due to the criteria or metrics used in those categorical schemes. Listed below are different categorization schemes for mental disorders (some official and some colloquial).

• [DSM-5-TR] Section II: Diagnostic Criteria and Codes
• [ICD-11] Chapter 6: Mental, Behavioral, or Neurodevelopmental Disorders
• General Categories of Mental Disorders