Methylphenidate-induced awake bruxism: a case report.

Methylphenidate (MPH) is a stimulant that is commonly used in the treatment of attention-deficit/hyperactivity disorder in children and adults. Several reports are available regarding the relationship of MPH use and sleep bruxism. We report the case of a 9-year-old boy who presented with severe awake bruxism after his second dose of sustained release form of MPH treatment, which was confirmed on rechallenge. This is the first report of its kind showing such relationship in the literature.