A Single Case Multimethod Assessment to Detect Significant Changes in the Psychoanalytic Treatment of Psychosomatic Disorders.

Mental disorders with body-centered symptoms, such as somatic, eating, and body dysmorphic disorders, present difficulties in psychotherapy because psychological suffering is manifested in the body rather than expressed verbally. The present study illustrates a single case multi-method investigation sensitive to detecting characteristic change manifestations in the treatment of these disorders. We investigated a treatment of a patient with body dysmorphic disorder. Computerized linguistic measures were applied to 86 sessions to assess changes in symbolic processing; out of the 86 sessions, 40 were analyzed to calculate the proportion of speech focused on bodily symptoms versus on relationships. Changes in personality were assessed using the SWAP-200 on nine sessions from different treatment stages. Measures of linguistic style, speech content, and personality showed marked changes over the treatment. The patient manifested schizoid and schizotypal personality traits that decreased over time, along with an increase in personality high-functioning dimension. The patient's ability to translate his emotional experience into words steadily increased, switching the primary focus of narratives from bodily symptoms to relationships. A multimethod assessment of the treatment of body dysmorphic disorder shows that improvement in personality functioning is accompanied by a shift from a focus on bodily experiences to a focus on relationships.