View clinical trials related to Schizophrenia.
Filter by:The primary purpose of this study is to determine whether SPD489 40 mg, 100 mg, and 160 mg are effective and safe in the treatment of Negative Symptoms of Schizophrenia (NSS).
Background: - Oxytocin is a chemical that the brain normally produces. It plays an important part in the way humans and other animals act in social and emotional situations. Adults with schizophrenia have been studied to see if oxytocin can reduce some symptoms of schizophrenia, such as hearing voices, feeling suspicious, and not feeling interested in daily life. These studies show that oxytocin may help. However, it has not been studied in children who develop schizophrenia. Researchers want to see if oxytocin, given as a nasal spray, is safe and can reduce schizophrenia symptoms in children. Objectives: - To see if an oxytocin nasal spray can reduce schizophrenia symptoms in children. Eligibility: - Children above 10 years of age who have childhood-onset schizophrenia, and have schizophrenia symptoms in spite of taking medication. Design: - This study will last 4 weeks. Participants will stay in the hospital for the entire period of the study. Participants may also have an extra 2 weeks of study medication and 1 week of testing immediately following the initial 4 weeks. - Participants will be screened with a physical exam and medical and psychiatric history. They will provide blood and urine samples, and have imaging studies of the brain. They will also have tests to look at their social and emotional functioning. These tests will take 1 week to perform. - Participants will have either oxytocin or placebo nasal spray twice daily for 2 weeks. - At the end of the 2-week period with nasal spray, there will be 1 week with no nasal spray. All the tests of week 1 will be repeated. - The optional extra 3 weeks (2 weeks with oxytocin and one week for testing) will be similar to the second, third, and fourth weeks of the study. All participants will have oxytocin during this period.
The purpose of this study is to compare the effect of oral paliperidone extended-release and oral risperidone immediate-release on cognitive function, especially the category fluency of Cognitive Abilities Screening Instrument, Chinese version (CASI C-2.0), in patients with an established diagnosis of schizophrenia.
The purpose of this study is the evaluation of effect of metformin on obesity and metabolic disturbance in patients taking clozapine.
In the current study, the investigators propose to measure the five domains of social cognition identified by the National Institute of Mental Health (NIMH) as relevant to individuals with psychosis (i.e., theory of mind, attribution style, emotion recognition, social perception, and social knowledge). The investigators will also explore the association between different domains of social cognition and outcomes relevant to psychotic disorder (e.g., symptomatology, social functioning, and vocational functioning).
The objective of the study is to compare the efficacy of intranasal oxytocin versus intranasal placebo to improve symptoms in schizophrenia patients who have residual symptoms despite being on adequate treatment with antipsychotic medication.
Background: Surveys have shown that antipsychotic drug combinations are frequently prescribed. Amisulpride, an atypical antipsychotic agent, has low incidence of extrapyramidal symptom (EPS) but with high cost compared to sulpiride. The objective of the study is to compare the efficacy and safety of the 800-mg/d amisulpride and 400-mg/d amisulpride plus 800-mg sulpiride in the treatment of acute psychotic exacerbations of schizophrenia. Method: In this 6-week, double-blind, fixed-dose study, patients with schizophrenia are randomly assigned to amisulpride (800 mg/d) or amisulpride (400 mg/d) plus sulpiride (800 mg/d).The hypothesis is that the two treatment groups have the similar efficacy and safety, but different cost.
Cannabis use disorders are an important public health problem in the United States, but no effective pharmacotherapies are available to treat these disorders. People with schizophrenia are more likely than healthy people to abuse cannabis. Cannabis use may worsen clinical outcomes in this group, making the identification of pharmacotherapy to treat cannabis dependence in those with schizophrenia important. The investigators intend to test the combination of dronabinol, a cannabinoid agonist, and the α2-adrenergic agonist clonidine, for cannabis dependence in subjects with schizophrenia. The combination of dronabinol and clonidine may alleviate cannabis withdrawal symptoms while allowing treatment-seeking outpatients to benefit from medical management (MM) sessions when they are trying to stop using cannabis. The investigators propose to assess the relationship of dronabinol and clonidine, when added to MM, on cannabis use patterns in cannabis-dependent patients with schizophrenia. Hypothesis: The investigators predict that combination pharmacotherapy of dronabinol and clonidine will significantly reduce cannabis use compared to those receiving placebo.
Repetitive transcranial magnetic stimulation (rTMS) is a new noninvasive therapy that uses magnetic energy applied to the scalp to modulate activity in the underlying regions of the brain. In this study we will examine the efficacy of treating auditory hallucinations in schizophrenia with rTMS, comparing two methods to target stimulation to a language processing region of the brain. One method targets the stimulation site using scalp landmarks, while the other uses functional magnetic resonance imaging (fMRI) combined with a language task.
The purpose of this study is to compare the patient satisfaction between continued administration of previous antipsychotics versus switched administration to paliperidone ER in non-satisfied patients with previous (paliperidone)