Background: Obsessive-compulsive disorder (OCD) in childhood is often refractory to treatment. Riluzole, a glutamate antagonist, has theoretical support as an alternative pharmacological treatment and has demonstrated possible benefit in some open-label trials in adults with OCD.
Methods: Six subjects, ages 8-16 years, were enrolled in a 12-week open-label trial of riluzole for OCD symptoms that had resisted prior treatments. OCD symptoms and adverse effects of drug were monitored.
Results: Four of 6 subjects had clear benefit, with reduction of more than 46% (39% overall) on Children's Yale-Brown Obsessive-Compulsive Scale, and "Much Improved" or "Very Much Improved" on the Clinical Global Impressions-Improvement scale. Two subjects had no clinically meaningful change in symptom severity by 12 weeks, but 1 subject improved thereafter. There were no adverse effects of drug sufficient to cause discontinuation or reduction of dose. All subjects elected to continue riluzole after the 12-week trial.
Conclusions: Riluzole may be beneficial for treatment-resistant OCD in young subjects and seems well tolerated. A placebo-controlled trial of the drug is planned.
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