Addiction, Substance

This study is testing whether brain activity related to learning can help predict how well teens respond to a treatment program designed to reduce cannabis use. Teens ages 14-17 will complete a brain scan and then take part in 10 weekly virtual sessions where they report cannabis use and complete drug tests at home. Participants can earn prizes for staying cannabis-free.

At the age of 17, in Brittany, 94.9% of adolescents have experimented alcohol consumption 78.1% within a month and 25.5% report repeated episodes of Intensive Punctual Alcohol. Among the potential explanatory factors of this worrying epidemiology, social and cultural factors induce a social valuation of alcohol consumption and drunkenness. There are also individual vulnerability factors, particularly important in adolescence between experimentation and the transition to regular use or even to alcohol use disorders. Despite the extent of the damage, there is currently little reliable data on effective primary prevention strategies for dealing with addictive behavior. Many prevention programs target age range in school settings, to delay or reduce use of psychoactive substances. A meta-analysis on the impact of this prevention programs in school settings, concluded that most interventions are associated with no or little impact with respect to the goal of reducing psychoactive substances with teenagers. Among existing programs, "PREVENTURE" has been evaluated in 5 trials with high-risk teenagers identified in schools settings, in different countries (Canada, Europe). The results show a clear and robust effect on reducing alcohol consumption. This program has not been tested outside the school setting and a recent review mention the need to make this program more accessible by targeting vulnerable groups and studying the impact of this program on this population. The PREVADO study is a prospective, controlled, randomised, open-label study. After inclusion, the adolescent completes the questionnaire SURPS (Substance Use Risk Profile Scale). The SURPS is self-report questionnaire that assesses four well-validated personality risk factors for substance misuse (Impulsivity, Sensation Seeking, Anxiety Sensitivity, and Hopelessness). There is a 23-item to which adolescents are asked to respond using a 4-point Likert scale ranging from "strongly agree" to "strongly disagree" : Hopelessness (7 items), Anxiety Sensitivity (5 items), Impulsivity (5 items), and Sensation Seeking (6 items). Adolescents will be randomized into 2 groups (stratification on the 4 predominant risk personality types from the SURPS (Substance Use Risk Profile Scale) and on the recruitment modality) : * Intervention group : teenagers follow the "PREVENTURE" program and routine cares * Control group : teenagers follow routine cares

The goal of this clinical trial is to learn if administering a high dose stimulant with Contingency Management reduces days of use in adults who use methamphetamine better than the usual treatment provided by the clinic. The main questions the trial aims to answer are: Is a high dose stimulant better than a placebo and usual treatment at helping reduce the number of days they use methamphetamine? Is a high dose stimulant with contingency management better than placebo and usual treatment at helping people reduce the number of days they use methamphetamine? Participants will be placed randomly into one of four groups: 1. Usual treatment and placebo 2. Usual treatment, placebo and contingency management 3. Usual treatment and high dose stimulant 4. Usual treatment, high dose stimulant and contingency management Participation includes the following: 1. Participants will receive medication or placebo weekly for 15 weeks. 2. Participants will attend the clinic for weekly treatment 3. Participants will attend the clinic once every 2 weeks for study visits. Each visit will take about an hour to complete. At these visits, participants will be asked to provide a urine sample and complete questionnaires.

The goal of this observational study is to validate the French version of the PAWSS scale in a population of patients with Alcohol Use Disorders. Prediction of Alcohol Withdrawal Severity Scale (PAWSS) has an excellent psychometric characteristics and predictive value of complicated alcohol withdrawal. The main question it aims to answer is: Are the psychometric properties of the French version of the PAWSS scale comparable to those of the English version in a population of alcohol use disorders subjects? AUDs participants are included and followed for three days during their hospitalization, They will performed several scales and surveys (DSM-5 AUD criteria, AUDIT, French version of PAWSS and CIWA-AR).

Chronic pain is associated with psychological disorders; which may affect a patient's socioeconomic, legal, domestic, and employment situations. This prospective observational study evaluates the impact of pain management on patients' health, social, economic, and employment status. It explores the impact of pain clinic services on patients' mental health, family health, public health, road safety, addiction situation, public safety, injury rehabilitation and employment situation.