First episode in bipolar disorder: misdiagnosis and psychotic symptoms.
BACKGROUND
This study explores factors that can influence other psychotic diagnoses in the first episode of a DSM-III-R bipolar disorder.


METHODS
It includes all 163 bipolar in-patients and out-patients in the state of Alava, North of Spain (Basque country) from February 1994 to May 1996. Patients were divided into two non-overlapping groups: unstable diagnoses, bipolars with an initial diagnosis of schizophrenia (or other psychosis), and stable diagnoses of bipolar disorder.


RESULTS
A logistic regression analysis using marital status, age at onset and mood incongruent psychotic symptoms found that the latter was the only independent factor significantly associated with an unstable diagnosis.
Gonzalez-Pinto
A
A
Santiago Apostol Hospital, Vitoria, Spain.
Gutierrez
M
M
Mosquera
F
F
Ballesteros
J
J
Lopez
P
P
Ezcurra
J
J
Figuerido
J L
JL
de Leon
J
J
D000328:Adult; D001714:Bipolar Disorder / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D012559:Schizophrenia / Q000175:diagnosis; D013030:Spain