[Screening and evaluation questionnaires for psychoactive substance use].

There is ample evidence for the interest of screening for psycho-active substance use in primary care, coupled with a brief intervention. The screening can be done during the medical consultation (focusing on frequency and quantity of substance use, loss of control and medical and psychosocial consequences) or with standardised screening instruments. The use of a questionnaire can be helpful for the physician. This article describes some validated questionnaires that allow a rapid and non-stigmatising screening for use of one or several substances. The ASSIST questionnaire, developed by WHO, accessible online, can be particularly useful; it allows the screening, evaluation and orientation for substance use and related problems in primary and general medical care settings.