Depressive, positive, negative and parkinsonian symptoms in schizophrenia

Abstract

OBJECTIVE: Depressive symptoms are common in schizophrenia but their relationship to the positive and negative symptoms of the disorder and to extrapyramidal side-effects remains unclear. Considerable overlap exists between these symptom clusters when rated with traditional clinical rating scales. The aim of this study was to investigate the relationship of depressive to positive, negative and parkinsonian symptoms using the recent adaptation of the Positive and Negative Syndrome Scale (PANSS). METHOD: The study involved the cross-sectional measurement of symptoms in a sample of community-treated and hospitalized patients with schizophrenia. Structured assessment included thePANSS, Montgomer..