Introduction & Theoretical Background
Psychiatric diagnostic frameworks serve multiple purposes. Classification of mental disorders enables clinicians and researchers to speak a common language when describing patterns of experience and behavior, guide appropriate treatment interventions, and act as a coding system for insurance purposes. The success of these classification frameworks has varied across diagnoses but in the best cases has led to improved understanding and treatment of conditions, as well as helping many service users who find such classification valuable (Perkins et al, 2018).
Diagnostic frameworks are not without controversy. They have been criticized on grounds of reliability, validity, and distortions due to commercial interests (Zigler & Phillips, 1961; Frances & Widiger, 2012; Bell, 2017). Perhaps most importantly there are instances where they have had, and continue to have, extremely negative effects upon service users (Perkins et al, 2018). Diagnosis is not the only way of understanding people and their experiences. Many clinicians and their clients