background : schizophrenia is a serious, chronic, and often debilitating neuropsychiatric disor­der. its causes are still poorly understood. besides genetic and non-genetic (environmental) fac­tors are thought to be important as the cause of the structural and functional deficits that character­ize schizophrenia. this study aimed to compare toxoplasma gondii infection between schizo­phrenia pat...

schizophrenia is a chronic psychotic disorder with unknown etiology that causes cognitive impairment, affecting thinking, behavior, social function, sleep and dream content. this study considered the dream content of patients with schizophrenia, siblings of patients with schizophrenia, patients with psychiatric diagnoses other than schizophrenia, and a group of healthy controls. the aim of this...

objective: the relationship between obsessive compulsive disorder and schizophrenia has been a matter of dispute for ages. this study aimed to investigate the differences between schizophrenia with obsessive compulsive symptoms (ocs) and schizophrenia without ocs in affecting positive and negative symptoms of schizophrenia.  methods: study participants comprised 30 patients with schizophrenia w...

Objective: The relationship between obsessive compulsive disorder and schizophrenia has been a matter of dispute for ages. This study aimed to investigate the differences between schizophrenia with obsessive compulsive symptoms (OCS) and schizophrenia without OCS in affecting positive and negative symptoms of schizophrenia.  Methods: Study participants comprised 30 patients with schizophr...

objective: the purpose of this research was to study the cognitive functions in patients with methamphetamine-induced psychosis (mip) in comparison with schizophrenia patients and normal subjects. method: this was a cross-sectional study, 30 patients with mip, 30 patients with schizophrenia and 30 normal individuals were selected via convenient sampling and were matched on age, sex and educatio...

objective: the present study aimed to clarify dissociative symptoms in patients with schizophrenia and its association with negative and positive symptom of schizophrenia. methods: based on the 4th edition of diagnostic and statistical manual of mental disorders (dsm-iv) criteria, 80 schizophrenic subjects were randomly selected from patients who referred to the clinics of psychiatry hospital i...

objective: neuregulin1 (nrg1) gene is among the most promising candidate genes for schizophrenia. this gene is located on 8p22-p12, a region with a reported linkage to schizophrenia. several studies have reported an association between schizophrenia and the 5′ end polymorphisms in this gene. however, some studies have failed to confirm the role of nrg1 gene in the pathogenesis of schizophrenia....

Schizophrenia is a severe psychiatric illness with a lifetime prevalence of ˜1% that imposes a huge toll on patients, their families and public health services worldwide. Delusions, hallucinations, disorganized speech, grossly disorganized or catatonic behavior and negative symptoms constitute the core symptoms of schizophrenia. Although the neurotransmitter dopamine plays a prominent role in t...

background: knowledge is limited concerning the role of temperament and character factors on schizophrenia. recent studies suggest that dimensions of temperament and character influence symptoms and functions in schizophrenia.  the purpose of this study was to determine the relationship between temperament and character with positive and negative symptoms in patients with schizophrenia. methods...