Exploration of symptom dimensions and duration of untreated psychosis within a staging model of schizophrenia spectrum disorders.

Aim: Clinical staging of schizophrenia entails a new method that identifies clusters of symptoms and variation in level of remission, with the goal to create a framework for early intervention. Additionally, duration of untreated psychosis (DUP) may influence symptom severity in the first episode of psychosis (FEP) and could necessitate refining of the staging model. However, consistent evidence concerning variation in symptom severity and DUP between stages is missing.

Exploring construct validity of clinical staging in schizophrenia spectrum disorders in an acute psychiatric ward.

Objective: clinical staging and profiling of schizophrenia spectrum disorders has been proposed to describe and define the heterogenous course of disease. We examined the construct validity of clinical staging in schizophrenia spectrum disorders by measuring differences in distribution and severity of relevant clinical profilers and therapeutic improvement (HoNOS) across clinical stages.

Methods: we performed a prospective cross-sectional study with 258 inpatiënts who met DSM-IV criteria for schizophrenia spectrum disorders, recruited in an acute ward of a psychiatric hospital from 1-1-2015 until 31-12-2016.

Compulsive carnival song whistling following cardiac arrest: a case study.

Background: Compulsivity is the repetitive, irresistible urge to perform a behavior, the experience of loss of voluntary control over this intense urge and the tendency to perform repetitive acts in a habitual or stereotyped manner. Compulsivity is part of obsessive-compulsive disorder (OCD), but may occasionally occur as stand-alone symptom following brain damage induced by cardiac arrest. In this case report, we describe a patient who developed compulsivity following cardiac arrest.