ABOUT THIS STUDY
- Must be an outpatient with a primary DSM-IV Obsessive-Compulsive Disorder. Patients must have a score of greater than 20 on the Yale-Brown Obsessive Compulsive Scale (Y-BOCS; Goodman et al., 1989b).
- Diagnosis of comorbid DSM-IV major depressive episode will be allowed in the study provided that the diagnosis is secondary to OCD, they have a baseline Montgomery Depression Rating Scale (MADRS) score of less than or equal to 19, and the onset of OCD predates the onset of the current episode of depression by five or more years.
- The ability to comprehend and comply with protocol requirements.
- Written consent must be provided prior to study entry.
- All women of childbearing potential (WOCBP) must be practicing a medically acceptable method of birth control
- All female subjects of childbearing potential (WOCBP), including those who are practicing a medically acceptable method of birth control, must have a negative serum pregnancy test within 72 hours prior to the start of study medication.
- Patients with any other primary DSM-IV psychiatric diagnosis in addition to Obsessive
- Patients who currently fulfil criteria for DSM-IV eating disorder, body dysmorphic
disorder, current alcohol or substance abuse, or who have a lifetime history of
bipolar disorder. Patients with a history of Schizophrenia and other psychotic
disorders, Delirium, Dementia, and Amnestic and other cognitive disorders.
- Subjects with a concurrent Axis II Cluster A Personality Disorder
- Borderline or Antisocial Personality Disorder.
- Subjects who based on history or mental status examination have a significant risk of
committing suicide, in the investigator's opinion.
- Subjects with a history of more than three adequate trials with an SSRI.
- Subjects who have had an adequate trial of pregabalin.
- Subjects who have initiated psychotherapy in the last 4 months prior to the first
- Subjects who, during the course of the study, would be likely to require treatment
with prohibited concomitant therapy .
- Prior use of or a known allergy or hypersensitivity to pregabalin.
- Subjects who have participated in any clinical trial within 30 days prior to entering
the study, or in a clinical trial involving a psychotropic medication within the 6
months prior to entering the study.
- Any subject who has been taking benzodiazepines before entering the study who: 1)
cannot tolerate being free of benzodiazepines for 4 weeks, or 2) has signs or symptoms
of benzodiazepine withdrawal or rebound at the end of those 4 weeks. Should a patient
entering the study, who is currently on benzodiazepines develop discontinuation
symptoms with discontinuation of their benzodiazepine, we will treat these symptoms
with a more gradual benzodiazepine taper. Study will be delayed until the patient is
able to tolerate the discontinuation for 4 weeks.
- Patients with a current seizure disorder, organic brain disorder or a history of
seizure disorders (except for febrile seizures in childhood).
- Patients with thyroid pathology, the treatment of which has not been stabilized for at
least three months.
- Patients on neuroleptic drugs in the two months prior to study entry or cognitive
behavioural therapy specific to OCD within four weeks of study entry
- Pregnant or lactating females, or if sexually active and of childbearing potential,
not using adequate methods of birth control.
- Patients with a history or evidence of a medical condition that would expose them to
an increased risk of a significant adverse event or interfere with assessments of
safety and efficacy during the trial.
- Patients receiving psychotropics of any kind, including betablockers and other
anticonvulsants. Sleep medication such as oral chloral-hydrate or zopiclone are
- Patients using any herbal psychoactive treatments, e.g. St John's Wort, Valerian, Kava
- Patients with any condition or on any therapy that, in the investigator's opinion, or
as indicated in the pregabalin product label, may pose a risk to the subject.
- Patients who have had a major life event in the past three months, which in the
judgement of the investigator is influencing their current condition.
- Patients having clinically significant abnormal laboratory, or ECG findings not
resolved by further examinations.
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