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  • Title: [Examination of the stability of medically unexplained symptoms and somatoform disorders over time within the context of different diagnostic concepts].
    Author: Steinbrecher N, Hiller W.
    Journal: Psychother Psychosom Med Psychol; 2011 Aug; 61(8):356-63. PubMed ID: 21544767.
    Abstract:
    OBJECTIVE: The aim of this study was to determine and to compare the stability of medically unexplained symptoms and somatoform disorders within the context of different diagnostic concepts (SSI4/6, DSM-IV, DSM-V). METHOD: In a 2-stage follow-up study, 620 consecutive patients were first of all screened using the PHQ-15 questionnaire. In the second stage, 308 selected persons were then interviewed in detail. 12 months later, 89,9% of participants could be interviewed again. RESULTS: Medically unexplained symptoms and somatoform disorders showed weak stability coefficients. In regard to Complex Somatic Symptom Disorder (DSM-V), the prevalence rates were smaller than expected. Within a year, they declined drastically. CONCLUSION: The instability of Complex Somatic Symptom Disorder should be taken into account when revising somatoform disorder for DSM-V. In order to improve stability, the time criterion should be extended by the duration of mental preoccupation with the ailments.
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