Active clinical trials for "Obsessive-Compulsive Disorder"

This study will examine the effectiveness of riluzole for treating Obsessive-Compulsive Disorder in Youth, Including those with Autism Spectrum Disorders.

This study will determine the effectiveness of adding motivational interviewing to cognitive behavioral therapy, consisting of exposure and ritual prevention, in improving treatment outcomes in people with obsessive-compulsive disorder.

Objectives: To evaluate tolerability and efficacy of escitalopram treatment in high dose than 20-50 mg/d in out-patients with OCD Type of the study: Open label, prospective study. Number of patients: 100 patients with OCD Duration of the study: 18-weeks of active treatment, 8-visits: Dose titration: One week of 10mg Four weeks of 20mg After 4 weeks of 20mg treatment- if partial/no response, according to YBOCS score and clinical judgment, dose increase of up to 50mg depending on response, adverse events, patient preference and judgment of the clinician 12 weeks follow up on high dose. Total of 18 weeks of follow-up.

The purpose of this study is two-fold: first, to observe the effect of one session of repetitive transcranial magnetic stimulation (rTMS) on the error-prediction abilities of patients with obsessive compulsive disorder (OCD) as well as healthy individuals; and second, to observe the clinical effect of 10 sessions of rTMS in patients with OCD.

Obsessive-compulsive disorder (OCD) is a severe psychiatric condition with only limited response to current first-line treatments, comprising pharmacotherapy and cognitive-behavioural therapy. Repetitive transcranial magnetic stimulation (rTMS) is a relatively new technique which has shown great promise in the treatment of refractory mood disorders, and schizophrenia, by alteration of brain activity. Previous work has demonstrated altered cortical excitability in OCD and preliminary studies have suggested that rTMS may have therapeutic potential in OCD. This pilot study will investigate the effectiveness of rTMS for treatment-refractory OCD, and establish appropriate treatment parameters. In addition, mechanisms whereby rTMS exerts its therapeutic effect will be explored using TMS to evaluate cortical inhibition and measures of cognitive biases and processing.

This study will evaluate the effectiveness of two cognitive behavioral therapies (CBTs) in treating obsessive compulsive disorder (OCD) in patients who are taking medication but still have residual symptoms.

Obsessive-compulsive disorder is a disabling and frequent disorder. In some patients, the medical treatment is ineffective. The pathophysiology of this disease is still unknown. Some data suggest that basal ganglia dysfunction could participate in the occurrence of OCD. The aim of this study is to evaluate the efficacy of subthalamic nucleus high-frequency stimulation in patients with severe OCD.

Bacteria carry substances on their surface called antigens. When antigens come into contact with the right kinds of cells in the body an immune reaction is caused. This reaction is often the symptoms of sickness that a patient feels. In order for the body to fight off the attack of antigens, it creates substances called antibodies. Antibodies counter the action of antigens and make the bacteria harmless. However, the immune system must learn how to make the right antibodies for the right antigens. Sometimes the body creates antibodies that confuse normal tissues as foreign and attack them. This is called an autoimmune reaction and sometimes occurs when the body is exposed to certain bacteria. One bacteria known for causing autoimmune reactions is Group A beta-hemolytic Streptococcus (GABHS). This bacteria often causes throat infections commonly known as "strep throat". Some researchers believe that the autoimmune reaction associated with strep throat infections may cause neuropsychiatric disorders, like obsessive-compulsive disorder and/or tic disorder in children. As a result, each time a child with one of these disorders experiences an infection with GABHS his/her symptoms can reoccur or worsen. Researchers believe that by giving patients a certain antibiotic, they can prevent GABHS infection and thus prevent the return of symptoms. This study is designed to test the effectiveness of the antibiotic Amoxicillin for the treatment of Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections (PANDAS). Patients will receive Amoxicillin for six weeks and placebos "inactive sugar pills" for six weeks in order to see if the medication is truly working. Effectiveness of the treatment will be based on the presence or absence of symptoms. If at the end of the study Amoxicillin is proven to be effective treatment for PANDAS patients may be offered the opportunity to continue taking the medication for an additional six months.

This preliminary study aims to examine the outcomes from a therapist guided, parent-led, CBT treatment for preadolescent children (aged 5 to 12 years old) with OCD. Specifically, this study aims to: Examine outcomes for children who receive the therapist guided, parent-led, CBT treatment for preadolescent children with OCD. Examine parents' experiences and views about the acceptability of the treatment approach.

This study is investigating whether combining noninvasive brain stimulation with behavior therapy can help to improve outcomes for obsessive-compulsive disorder (OCD). Exposure and response prevention (ERP) -- a specific type of behavior therapy -- is a first line treatment for OCD. This study will test whether a form of noninvasive brain stimulation called transcranial direct current stimulation (tDCS), can help ERP work better.