PubMed · 16201035
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2005. Conversion disorder.. https://pubmed.ncbi.nlm.nih.gov/16201035/
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PURPOSE OF REVIEW: Although dissociative disorders have been described and diagnosed for some time, their aetiology, pathogenesis, phenomenology and management continues to arouse debate. It is only in recent times that researchers have made some progress by integrating trauma related theories with more contemporary cognitive theories and neurobiology. RECENT FINDINGS: Dissociation as a phenomenon is reported to occur in a variety of disorders. This widespread occurrence has contributed to a better understanding of dissociation. An expansion of this concept may have contributed to the loss of its original significance. Recent studies in the field of dissociation that pertain to its aetiology, pathophysiology, neurobiology and management are critically reviewed. SUMMARY: Dissociative disorder is conceptually a difficult disorder to study. Apart from exposure to trauma, certain primary personality attributes may contribute to the propensity to develop dissociative disorder. Recent advances in functional neuroimaging facilitated by enhanced knowledge in the neural representation of body state have helped to improve our understanding of dissociation. There is confusion over the use of various terms such as sexual abuse and physical abuse in explaining causality. Current classificatory systems have not been found suitable when applied across cultures. In spite of all of these limitations, there has been recent progress toward a better understanding of dissociative disorders.
PURPOSE OF REVIEW: Patients with medically unexplained symptoms continue to intrigue, fascinate and frustrate clinicians. They are common in general medicine and often present with apparent neurological disorder. This review aims to provide insight into the recent literature that has sought to clarify epidemiology, diagnostic issues, aetiologic understanding and treatment of patients with psychogenic disorders who usually first present to neurologists. RECENT FINDINGS: Somatoform disorders are common in neurological practice. A number of papers have addressed issues of epidemiology and identified that medically unexplained symptoms in neurological populations are higher than originally thought. A number of recent review papers have served to summarize areas of considerable information (e.g. treatments) and areas of rapid growth in knowledge (e.g. neuroimaging). Studies investigating the role of psychological factors are well represented and clarify our psychopathological understanding of somatoform disorders in patients presenting to neurologists. Treatment studies are few and continue to be limited by population sizes and study designs. SUMMARY: Somatoform disorders are common in neurological populations. Comorbidity related to somatoform disorders with known organic neurological conditions requires further study. On account of the limitations of treatment studies, evidence-based clinical management of these patients is awaited.