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Our knowledge of longer term outcome in psychogenic nonepileptic seizures (PNESs) patients is limited; we know less still about factors predicting prognosis. This study was intended to describe outcome in a large cohort and to identify predictive clinical and psychological factors to generate new ideas for treatment. One hundred sixty-four adult patients with PNESs (66.7%) responded to outcome, personality, and psychosymptomatology questionnaires (Dimensional Assessment of Personality Pathology-Basic Questionnaire [DAPP-BQ], Dissociative Experiences Scale, and Screening Test for Somatoform Symptoms) a mean of 11.9 years after manifestation and 4.1 years after diagnosis of PNES. Additional clinical data were retrieved from hospital records. The responses showed that 71.2% of patients continued to have seizures and 56.4% were dependent on social security. Dependence increased with follow-up. Outcome was better in patients with greater educational attainments, younger onset and diagnosis, attacks with less dramatic features, fewer additional somatoform complaints, and lower dissociation scores. Better outcome was associated with lower scores of the higher order personality dimensions "inhibitedness," "emotional dysregulation," and "compulsivity" but not "dissocial behavior" (DAPP-BQ). Outcome in PNESs is poor but variable. Clinical and personality factors can be used to provide an individualized prognosis. By generating a patient-specific profile, they show particular maladaptive traits or tendencies that can identify goals for psychological therapy.

Integrated psychological intervention appears effective in delaying the onset of psychosis over a 24-month time period in people in an EIPS.

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Evidence from neurobiological studies suggests that schizophrenia arises from an early abnormality in brain development and possibly further progressive developmental mechanisms. Despite a delay between the acquisition of neuropathology and the triggering of psychosis, neurobiological susceptibility is likely to be expressed subclinically by biobehavioral markers in the premorbid stage. The exploratory study aims at identifying potential neurocognitive risk factors and investigating the unfolding of the illness within a cross-sectional design by comparing neurocognitive profiles in 179 healthy controls, 38 clinically identified subjects in an early initial prodromal state (EIPS) for psychosis, 90 subjects in a late initial prodromal state (LIPS), 86 first-episode patients with schizophrenia, and 88 multiple-episode patients. Subjects at risk were substantially impaired in verbal executive and verbal memory functions. Compared to EIPS subjects, LIPS subjects demonstrated additional attentional deficits. Both EIPS and LIPS subjects were superior to first-episode patients who presented a generalized neuropsychological deficit profile, and to multiple-episode patients who showed evidence for further decline. Although results were influenced by general intellectual abilities and demographic and clinical characteristics, they could not account for total group differences. Results support a neurodevelopmental model of psychosis with further progressive mechanisms and are consistent with a primary involvement of left frontotemporal networks in the prodromal phase.

The brief group CBT intervention showed some superiority to the PE programme, which could be of considerable clinical and economical importance.

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