Psychotherapeutic intervention in somatisation disorder: results of a controlled study from India

Validity and utility of Hierarchical Taxonomy of Psychopathology (HiTOP): III. Emotional dysfunction superspectrum

The Hierarchical Taxonomy of Psychopathology (HiTOP) is a quantitative nosological system that addresses shortcomings of traditional mental disorder diagnoses, including arbitrary boundaries between psychopathology and normality, frequent disorder co-occurrence, substantial heterogeneity within disorders, and diagnostic unreliability over time and across clinicians. This paper reviews evidence on the validity and utility of the internalizing and somatoform spectra of HiTOP, which together provide support for an emotional dysfunction superspectrum. These spectra are composed of homogeneous symptom and maladaptive trait dimensions currently subsumed within multiple diagnostic classes, including depressive, anxiety, trauma-related, eating, bipolar, and somatic symptom disorders, as well as sexual dysfunction and aspects of personality disorders. Dimensions falling within the emotional dysfunction superspectrum are broadly linked to individual differences in negative affect/neuroticism. Extensive evidence establishes that dimensions falling within the superspectrum share genetic diatheses, environmental risk factors, cognitive and affective difficulties, neural substrates and biomarkers, childhood temperamental antecedents, and treatment response. The structure of these validators mirrors the quantitative structure of the superspectrum, with some correlates more specific to internalizing or somatoform conditions, and others common to both, thereby underlining the hierarchical structure of the domain. Compared to traditional diagnoses, the internalizing and somatoform spectra demonstrated substantially improved utility: greater reliability, larger explanatory and predictive power, and greater clinical applicability. Validated measures are currently available to implement the HiTOP system in practice, which can make diagnostic classification more useful, both in research and in the clinic.

Caregiver burden and disability in somatization disorder

OBJECTIVE

Authors assessed disability and caregiver burden in patients with somatization disorder (SOM-D), and compared it with that in patients with schizophrenia and chronic depression.

METHODS

The sample consisted of 30 patients diagnosed as SOM-D as per ICD 10 Diagnostic Criteria for Research (ICD-10-DCR), and 30 age- and gender-matched patients each of schizophrenia and depression, who served as comparison groups. Disability and caregiver burden were assessed using WHO's Disability Assessment Schedule (WHO-DAS) and the Family Burden Assessment Schedule (FBAS) respectively. Functioning and severity of illness were assessed on the Global Assessment of Functioning scale (GAF) and Clinical Global Impression scale (CGI) respectively.

RESULTS

Severity of illness in patients with SOM-D was comparable to that in the comparison groups. Patients with SOM-D scored higher on total disability on WHO-DAS than the patients with schizophrenia and depression, though scores on family burden were comparable. Disability in patients with SOM-D was more in females, less educated, older and those working at home, compared to the other demographic groups.

CONCLUSION

Patients with SOM-D suffer considerable disability due to illness and impose significant burden on their caregivers, comparable to that seen in severe mental illnesses like schizophrenia and chronic depression.