@misc{10481/105188,
year = {2017},
month = {2},
url = {https://hdl.handle.net/10481/105188},
abstract = {Background and objectives: We aimed to study the psychopathological profile in different dis-
orders across the psychotic continuum and to demonstrate that negative symptoms are not so
rare in delusional disorder, as it was traditionally considered.
Methods: This was an observational study utilizing a sample of 112 patients with a psychotic
disorder (delusional disorder, schizophrenia or schizoaffective disorder). The Positive and Neg-
ative Syndrome Scale (PANSS) was used to ascertain psychopathological symptoms. One-way
ANOVA analyses and post hoc comparisons using the Bonferroni correction were carried out to
compare illness duration and PANSS indices. Additionally, t-tests were performed to explore the
difference between positive and negative symptomatology in the delusional disorder group.
Results: Clinical groups were statistically similar in General PANSS scores, but they differed
significantly, in Positive, Negative and Composite PANSS scores. Negative symptoms existed in
all three psychotic categories, although they were less prominent in delusional disorder. Positive
symptoms were also present in all three categories but were significantly more apparent among
schizoaffective disorder patients.
Conclusions: Our results support the notion of a psychopathological gradient across the psy-
chosis continuum from patients with delusional disorder, at one extreme of the scope, to those
with schizoaffective disorder, at the other. More importantly, we have found out that in delu-
sional disorder, negative symptoms do exist and are of similar intensity as positive symptoms.},
organization = {Instituto de Salud Carlos III (ISCIII)  (PS09/01671 and PI13:01967), (PI021813)},
organization = {CIBERSAM CB07/09/0036},
publisher = {Elsevier},
keywords = {Psicosis},
keywords = {Síntomas negativos},
keywords = {Psychosis},
keywords = {Negative symptoms},
title = {Negative symptoms across psychotic spectrum disorders},
doi = {10.1016/j.ejpsy.2016.12.002},
author = {Muñoz Negro, José Eduardo and Lozano, Vanessa and Ibanez-Casas, Inmaculada and Gómez de la Cruz, Bartolomé and Soler, Agustín and Alcalá, José Antonio and Ontiveros, Carmen and Aznarte, Pilar and Cervilla Ballesteros, Jorge Antonio},
}