Active clinical trials for "Obsessive-Compulsive Disorder"

This study will evaluate the effectiveness of 12-weeks of probiotic treatment in adults with primary Obsessive-Compulsive Disorder and whether this treatment will alter the microbiota composition in these patients.

This study is being done to learn whether administration of intranasal (inhaled through the nose) ketamine reduces symptoms of obsessive-compulsive disorder (OCD). Ketamine has been approved by the U.S. Food and Drug Administration (FDA) as an anesthetic agent (a medicine to reduce pain during surgery and other procedures) but ketamine has not been approved by the FDA as a treatment for OCD. The investigators believe that ketamine may be effective in reducing symptoms of OCD due to its ability to decrease the activity of a specific brain chemical called glutamate. Previous studies have shown that people with OCD can have abnormal levels of glutamate in their brains. This is the first time that intranasal ketamine is being studied in people with OCD. However, studies have been done in the past using intravenous (IV; through a needle into a vein in your arm) ketamine in people with OCD, and intranasal ketamine has been studied in people with other psychiatric conditions. This research study will compare ketamine to placebo. The placebo looks exactly like ketamine, but contains no ketamine. At some time during the study, the investigators will give you ketamine. At another time, the investigators will give you placebo. Placebos are used in research studies to see if the results are due to the study drug or due to other reasons.

The purpose of this study is to determine whether AFQ056 as an add on therapy to SSRIs can have beneficial effects by reducing the total score of Y-BOCS (Yale and Brown Obsessive Compulsive Scale) in OCD patients resistant to SSRI treatment (failed SSRI over 12 weeks at appropriate doses).

The Canadian Rapid Treatment Center of Excellence (CRTCE) is a healthcare facility principally focused on providing best practices of intravenous ketamine treatment to adult patients suffering from mental health conditions. The center focuses specifically on treating individuals suffering from major depression disorder, bipolar disorder, post-traumatic stress disorder and obsessive compulsive disorder as their primary diagnosis. Herein, this retrospective analysis aims to look at past data in order to further develop our understanding of ketamine in the use of psychiatry.

Obsessive-compulsive disorder (OCD) is a common illness that causes significant distress and impairment. Currently, serotonin reuptake inhibitors (SRIs) are the only medications that are FDA-approved to treat OCD. Unfortunately, SRIs can take a long time to work (2-3 months), and even then they usually only partially reduce OCD symptoms. The present study, will test if intranasal ketamine is feasible to use and can reduce OCD symptoms significantly more than a comparison medication called midazolam. Therefore, you may or may not receive ketamine as part of this study. Results from this study will allow doctors and researchers to better understand if you and others with OCD may respond to this class of medications.

Deep brain stimulation (DBS) is an FDA approved, and widely used method for treating the motor symptoms of Parkinson's disease (PD), Essential Tremor (ET), Dystonia and Obsessive Compulsive disorder (OCD). Over 100,000 patients worldwide have now been implanted with DBS devices. Current approved methods to locate the DBS target regions in the brain use a combination of stereotactic imaging techniques and measurements of the electrical activity of brain cells. As part of the standard clinical technique, electrical data are collected from individual nerve cells. The target brain region emits unique electrical signals. At certain brain locations, during DBS surgery, additional electrical data that are generated in response to sound will be collected. Regions of the brain that have a decreased response to repeated sound (auditory gating) may be important DBS targets for improving thinking. The aims are (i) during DBS surgery, in addition to EEG, use microelectrodes in the brain to find brain regions, along the normal path to the DBS target, where auditory gating occurs and then (ii) determine if stimulation of the identified region(s) alters auditory gating measured by EEG. Also an additional aim (iii) is to measure electrical activity at the scalp with EEG to characterize auditory gating in patients before and after DBS surgery and also a healthy control population.

The Thompson Centre Intensive Treatment program for individuals with severe Obsessive-Compulsive Disorder was launched in 2017. The program is focused on the principles and use of Exposure and Response Prevention Therapy (ERP) and Cognitive Behavioural Therapy (CBT) in its work with clients, however it also integrates other treatment approaches in its structure, including Dialectical Behavior Therapy, Mindfulness, Acceptance and Commitment Therapy, and Art Therapy. Clients are expected to participate in Art Therapy group in the same way they are expected to participate in all other groups in the program schedule. Though clients comment informally on the benefits of Art Therapy as experienced in the program, study is needed to better understand and appreciate the role Art Therapy can play in helping clients with OCD to manage and where possible, ameliorate, the burden of their symptoms. Although Art Therapy has been researched to some degree, in particular its role in alleviating distress associated with various health and mental health conditions, to date there has been no systematic investigation addressing or supporting patients'/clients' perception of the value of Art Therapy by people who live with Obsessive Compulsive Disorder (OCD). In this study, the investigators are proposing to use information from client surveys regarding their experiences in an Art Therapy group within an intensive OCD treatment program, regarding their experience and opinions about the benefits of Art Therapy within a structured, intensive program for individuals who live with severe OCD. Therefore, this proposed study would be an entirely new contribution both to the fields of Art Therapy and OCD. The hypothesis of the study is that individuals with severe Obsessive-Compulsive Disorder participating in an intensive CBT/ERP treatment program will report benefits specific to their experience in Art Therapy sessions within the program.

The purpose of this study is to compare two ways to stop taking an antidepressant medication and determine whether a faster or slower taper is better tolerated.

Obsessive-compulsive disorder (OCD), characterized by recurrent obsessions and/or compulsions, is a disabling psychiatric condition affecting approximately 2-3% of the population. Whereas several first-line treatments have been established (e.g., pharmacological and psychological), a substantial proportion of patients (40-60%) fail to experience symptom remission, underscoring the need for research in this area. One approach to increasing treatment efficacy is to target underlying risk factors or dysfunctions that may in turn improve outcomes. One such risk factor is anxiety sensitivity (AS) cognitive concerns. AS cognitive concerns reflects fears of mental incapacitation (e.g., "It scares me when I am unable to keep my mind on a task"). There is recent evidence that AS cognitive concerns is uniquely associated with various obsessive-compulsive (OC) symptom domains. However, questions remain as to whether reductions in AS cognitive concerns will lead to subsequent reductions in OC symptoms. The purpose of the proposed study is to investigate the efficacy of a brief AS cognitive concerns intervention on reductions in OC symptoms.

Obsessive-compulsive disorder (OCD), characterized by intrusive thoughts (obsessions) and related behavioral rituals (compulsions), is a common psychiatric illness that often emerges in childhood and causes life-long disability in over 50% of patients. Psychological theory suggests that OCD symptoms are driven by a person's difficulty disengaging their feelings from simple tasks (e.g. washing hands, locking a door) due to excessive anxiety about performance errors. Cognitive behavioral therapy (CBT), the gold standard treatment for OCD, repeatedly exposes patients to their OCD-stressor until this anxiety is reduced. While CBT is typically more effective in teenagers than adults, patients from both age groups are usually left with residual symptoms, highlighting the need for better treatments. In this study, CBT will be studied in both teen-aged and adult patients. Two groups, both with childhood onset OCD, will be randomized to either CBT for OCD or stress management training (SMT), an active therapy but with minimal effects on OCD symptoms. The investigators will also study age-matched, healthy controls as comparison subjects. Before and after 12 weeks of CBT, all subjects will undergo functional Magnetic Resonance Imaging (fMRI) scans to see what regions of the brain become active when a concentration task is performed and how that activation is changed after CBT. The purpose of this study is to demonstrate the brain changes associated with CBT treatment and how differences in these changes in teenage compared to adult patients may drive differences in CBT response.