Negative Symptoms in Schizophrenia and Depression

This study examines the differences between the prevalence of negative symptoms in schizophrenia and Major depression, diagnosed according to RDC, using Andreasen's Scale for Assessment of Negative Symptoms, SANS. Global ratings of affective flattening, alogia, avolition and inattention were significantly higher in schizophrenics whereas anhedonia - asociality were seen as commonly in depressives also. Most negative symptoms were more common in schizophrenics. Awareness of these symptoms and reduced sexual interests were significantly more in depression. Some symptoms were common in both groups. The results indicate that negative symptoms though commonly seen in depressives also, are more frequent in schizophrenic patients.