This project theoretically investigates how the concept of dissociative conversion disorders has change during time. The main goal is to examine and sum up the current knowledge and to debate whether we have come any further in having a comprehensive understanding of the phenomenon today. Dissociative conversion disorders give symptoms of either somatic or motoric disturbance which often arises in the unset of a traumatic life event, but are still referred to as medically unexplained symptoms. It is believed that the etiology of the illness arises from a combination of biopsychosocial conditions, but the precise mechanism involve is still unknown. The development of functional neuroimaging tools has made it possible to investigate if there is any connection between neurological dysfunction and conversion disorders. Quiet new neuroimaging studies try to investigate a connection between emotional significant content and sensorimotor disturbance. The studies are retesting the old hypotheses about trauma relates to dissociation with an experimental design where the participant is prone to a placed “traumatic” event during an fMRI scan. The study between emotion and neurological conditions has long been known as the affective neuroscience. A Danish psychologist has created what she calls “the neuroaffective developmental psychotherapy” in which she tries to comprehensive the research of affective neuroscience into one complex and integrated model called “the neuroaffective compass model”. In this model, dissociation is a consequence of a disorganized attachment still during childhood which results in a general sensibility to stress, also referred to as a “reactive attachment disruption”. The model can partly be validated be the empirical evidence, which also finds that a state of sensibility might create the dissociative conversion symptoms. However, it is still today not made possible to collaborate a broad biopsychosocial model of the illness.