Even head trauma without TBI under the influence of alcohol implies an elevated risk of subsequent TBI. A brief intervention to reduce hazardous drinking is needed to prevent TBI.

We found an excess of head traumas during weekends and the primary vacation month, and this excess was associated with heavy episodic drinking. Active measures are needed to prevent head traumas caused by this type of behaviour.

The reduction in alcohol prices and the concomitant increase in alcohol consumption did not increase the incidence of alcohol-related moderate-to-severe TBI.