Nocturnal bruxism in a patient with Behçet disease and posttraumatic stress disorder successfully treated with gabapentin.

Bruxism is an involuntary movement, including teeth grinding and clenching, which occur primarily during sleep. Although Behçet disease and posttraumatic stress disorder both have a high prevalence of sleep problems, bruxism is extremely rare in these 2 disorders. Here, we report a rare case of concurrent Behçet disease and posttraumatic stress disorder, which presented with antidepressant-refractory sleep disturbance accompanied by teeth grinding, clenching, and snoring that was successfully treated with gabapentin.