View clinical trials related to Psychotic Disorders.
Filter by:The purpose of this study is to learn if aripiprazole is effective in the treatment of a large number of persons diagnosed with schizophrenia or schizoaffective disorders
The purpose of this study is to determine the safety and efficacy of topiramate in adolescents with manic or mixed episodes of Bipolar I Disorder.
The purpose of this study is to compare the effectiveness, tolerability, and efficacy of the currently available atypical antipsychotic drugs olanzapine (2.5-20 mg/day), quetiapine (100-800 mg/day) and risperidone (0.5-4 mg/day) in patients with schizophrenia, schizophreniform disorder, or schizoaffective disorder who are experiencing their first psychotic episode.
This is a research study comparing the safety and efficacy of two active study medications
The primary purpose of the study is to assess the safety and tolerability of a long-acting injectable formulation of risperidone when switching from an oral antipsychotic in patients with schizophrenia.
The purpose of this study is to evaluate the efficacy and safety of risperidone compared with placebo in the treatment of psychotic symptoms in patients with Alzheimer's disease
This study will examine the underlying mental processes that determine how people understand social behavior, remember information, and think. Language, planning, problem solving, reasoning, social behavior, and memory are the critical parts of cognition that make up daily life. This study will explore the association between performance on various experimental tasks and day-to-day functioning. Healthy normal volunteers and patients with certain kinds of brain damage (primarily focal or degenerative lesions of the human prefrontal cortex) or psychiatric disorders may be eligible for this study. Candidates with central nervous system trauma, disease or dysfunction will be screened with a routine neurological examination and history. Participants may be asked to complete written tests, sit in front of a computer monitor and press a key to indicate a decision about what appears on the screen (for example, whether a statement is accurate) and answer questions from a test examiner. A skin conductance response (SCR) test may be done along with some of the cognitive tests. SCR uses electrodes (pieces of metal attached to wires) placed on the fingers to measure the subject's emotional reaction to a test. Participants may also do an evoked response test, in which the subject watches words or scenes on a TV screen while his or her responses are recorded from electrodes placed on the scalp (similar to an electroencephalogram). The tests will be scheduled for an average of one session a week, with each session lasting from 30 minutes to 3 hours. Generally, 15 sessions will be scheduled over a 1-year period. Special arrangements will be made to accommodate participants from out-of-town. Participants may have a magnetic resonance imaging (MRI) scan of the brain. This test uses radio waves and a strong magnetic field to picture structural and chemical changes in tissue. For the procedure, the subject lies on a table in a space enclosed by a metal cylinder (the scanner) for about 1 hour. In addition, some study subjects will be invited to participate in a training study designed to improve their planning or social behavior. Participation requires coming to NIH daily over a 1- to 2-month period for 1 to 2 hours each visit.
The purpose of this research study is to determine whether a new drug for schizophrenia is better for the maintenance treatment than a standard drugs currently prescribed. The new medication is called quetiapine and it will be compared with a standard medication called haloperidol decanoate. The study will determine if quetiapine causes fewer problems than haloperidol with side effects such as stiffness and restlessness and whether it costs the VA more or less to treat patients with quetiapine. In addition, blood samples will be collected every three months to determine if certain chemicals in the blood can influence the outcome of the subjects' illness.
The purpose of this study is to determine if Cognitive - Behavioral Social Skills Training (CBSST) improves functioning in older patients with schizophrenia.
Although currently marketed antipsychotic drugs are useful in the treatment of schizophrenia, efficacy and safety profiles need to be improved. Forty to eighty percent of patients either fail to respond or only partially respond to conventional antipsychotic agents. Secondary symptoms may be unimproved even in patients who respond to treatment. A variety of adverse events occur in patients receiving currently available agents. The severity of these events contributes to the poor compliance that is observed in this patient population. Olanzapine is a novel antipsychotic agent with a reduced incidence of extrapyramidal symptoms. Other side effects are minimal.