Olivier Phan

• Clinique médicale et pédagogique Dupré

Aims: Dangerous patterns of alcohol consumption, such as binge drinking, are prevalent among the student population at prestigious universities. Despite the risks of this behavior, few secondary prevention programs have been created to meet the specific needs of this population. The PEERCARE program is a peer-based prevention program that seeks har...

In French Grandes Écoles, heavy alcohol consumption seems to be generalized and largely tolerated, leading to particular concerns about Alcohol Use Disorder and harmful alcohol practices among students. The COVID-19 pandemic led to increased psychological difficulties, and two coexisting scenarios seemed to emerge regarding alcohol consumption: A d...

Objective : The « care and studies » hospitalisation at the Dupré Clinic (Fondation Santé des étudiants de France ; Students Health French Foundation) is an original setting that integrate a therapeutic and eco systemic residential approach with schooling for adolescents suffering from psychiatrics disorders. We study and evaluate the hospitalisati...

Résumé Objectif En pratique clinique, certains adolescents présentent, de manière concomitante, un refus scolaire anxieux et un mésusage des jeux vidéo, le plus souvent en ligne. Comprendre ce que ces jeux apportent aux adolescents en souffrance, identifier l’intrication de ces deux comportements problématiques et les situations où le jeu devient...

Disconnection and disengagement are frequent characteristics of interactions between parents and adolescents who present with substance use disorders. Excessive blame, defensiveness, and recrimination characterize day-today interactions within these families. Developmental psychopathology research reveals both short-and long-term effects of negativ...

Résumé La clinique Dupré a mis en place un service d’addictologie et de consultation ambulatoire qui opère un travail de liaison au sein des unités d’hospitalisation en soins/études. Dans cet article, nous décrivons cette activité en soulignant d’abord les influences théoriques et pratiques sur lesquelles reposent nos interventions. Puis nous montr...

Among adolescents, heavy video game use and socializing online may be valued socially by peers, depending on gender and age, which can increase life satisfaction. However, heavy video gaming may also be linked to symptoms of Internet Gaming Disorder, which can decrease life satisfaction. Overall, when symptoms of Internet Gaming Disorder are presen...

Background and aims: The aim of this study was to evaluate the effects of a prevention intervention on French adolescents' Internet and video games use and on their beliefs concerning gaming and Internet Gaming Disorder (IGD), in order to adjust prevention programs further. Methods: The study comprised a prevention intervention group (PIG) and a...

Background and aims: Clinicians and researchers are increasingly interested in investigating excessive use of video gaming recently named Internet gaming disorder (IGD). As is the case with extensively researched adolescent problem behaviors such as substance use disorder, several studies associate IGD with the young person's family environment an...

Moment charnière entre l’enfance et l’âge adulte, l’adolescence est cette période de la vie où un jeune acquiert son indépendance. Cette quête d’autonomie, qui n’est pas un choix mais une nécessité, passe par des essais et des prises de risque. Les parents peuvent se sentir désarmés, avoir l’impression qu’ils ne sont plus écoutés, que leur adolesce...

Face à l’usage grandissant des jeux vidéo et au nombre croissant de sujets en ayant un usage problématique, la prévention dans ce domaine s’avère nécessaire. L’objectif de cette étude était d’investiguer l’usage, mais surtout les représentations des risques associés à l’usage des jeux vidéo chez des jeunes adolescents en comparant les joueurs probl...

Objective: In recent decades, alexithymia has been considered a risk factor for multiple somatic and psychiatric conditions. Yet, whereas alexithymia has been extensively studied in adults with a substance misuse, only one study has reported data on cannabis abusers from the general population. Hence, our main objective was to explore alexithymia...

Over the past 10 years, the consumption of cannabis among adolescents has dramatically increased. Today, adolescent cannabis use is a major public health problem. Two forms of cannabis are commonly smoked: herb (marijuana) and resin. These forms have a high concentration of tetrahydrocannabinol, the active molecule of cannabis. Recent research has...

Background: The use of illicit substances, in particular cannabis, among French adolescents and young adults has become an important public health concern. A better understanding of the mechanisms involved in pathological substance use is nowadays critical. Psychiatric comorbidities have been previously reported in adult substance abusers but are...

Aims: During the past 20 years, cannabis consumption among adolescents has dramatically increased. In France, over 300 outpatient treatment centres caring for youngsters with cannabis abuse diagnoses were created. For this study, five European countries participated in a randomised controlled trial on adolescents with cannabis addiction. The goal w...

Psychopathological profiles and the health and social risks facing young people consuming psychoactive substances vary depending on the product being consumed, the quantity taken, and the regularity of intoxication. Occasional, social intoxication without any damaging effects, in the majority of cases, may nonetheless result in sometimes fatal beha...

To address a growing public health problem with youth cannabis use, five Western European countries – Belgium, France, Germany, the Netherlands and Switzerland – collaborated on a cannabis treatment research effort. After deliberation, the research priority chosen was to implement and rigorously evaluate a treatment program for adolescents with can...

Le programme européen international cannabis need of treatement (INCANT) a été l’occasion de formaliser les pratiques cliniques européennes – nommée treatment as usual (TAU). La formalisation permet d’identifier les éléments qui composent les TAU.

In European countries, cannabis abuse and dependence among adolescents has become a public health priority. Since 2002, studies have shown that persons seeking treatment for cannabis use are increasing. Over the past ten years, the involvement of many structures working on this topic has permitted an expansion and a diversification of treatment pro...

Le cannabis est la substance illicite la plus consommée en France chez les jeunes. L’augmentation de l’usage et sa précocité sont un problème majeur de santé publique. L’efficacité de la thérapie familiale multidimensionnelle a été démontrée aux États-Unis puis récemment en France. La thérapie familiale multidimensionnelle (MDFT) est une approche p...

US-based trials have shown that Multidimensional Family Therapy (MDFT) not only reduces substance abuse among adolescents, but also decreases mental and behavioural disorder symptoms, most notably externalising symptoms. In the INCANT trial, MDFT decreased the rate of cannabis dependence among Western European youth. We now focus on other INCANT ou...

Among illegal psycho-active drugs, cannabis is the most consumed by French adolescents. Multidimensional family therapy (MDFT) is a family-based outpatient therapy which has been developed for adolescents with drug and behavioral problems. MDFT has shown its effectiveness in adolescents with substance abuse disorders (notably cannabis abuse) not on...

Background: Noticing a lack of evidence-based programmes for treating adolescents heavily using cannabis in Europe, government representatives from Belgium, France, Germany, The Netherlands, and Switzerland decided to have U.S.-developed multidimensional family therapy (MDFT) tested in their countries in a trans-national trial, called the Internat...

The present study aims at validating the Cannabis Abuse Screening Test (CAST) in a clinical sample of adolescent and young adult cannabis users seeking treatment. Applying a classical test theory approach using DSM-IV diagnoses as gold standard, two versions of the CAST questionnaire are compared. The sample consisted of 140 subjects aged 15-26 yea...

Implementation fidelity, a critical aspect of clinical trials research that establishes adequate delivery of the treatment as prescribed in treatment manuals and protocols, is also essential to the successful implementation of effective programs into new practice settings. Although infrequently studied in the drug abuse field, stronger implementati...

Dans cet article, les auteurs décrivent comment, depuis trois ans, ils développement une thérapie familiale d’inspiration systémique, la MDFT (MultiDimentionnal Family Therapy) à destination des abuseurs et/ou dépendants aux jeux vidéo. Cette méthode semble être particulièrement bien adaptée aux troubles des conduites à l’adolescence quelles qu’ell...

MDFT (Multidimensional Family Therapy) is a family based outpatient treatment programme for adolescent problem behaviour. MDFT has been found effective in the USA in adolescent samples differing in severity and treatment delivery settings. On request of five governments (Belgium, France, Germany, the Netherlands, and Switzerland), MDFT has now been...

Cocaine remains the second most used illicit drug in Europe, after cannabis, though levels of use vary between countries. This psychostimulant has become a noticeable part of the European drug scene. Cocaine dependence, a chronic, relapsing and multifactorial disorder, is a significant worldwide public health problem with somatic, legal, social, co...

In France, cannabis is the illicit substance most tested and consumed by the teenagers. In the United States, a therapy appeared particularly effective in this field: MultiDimensional Family Therapy (MDFT), taking as a starting point systemic and cognitive techniques. To validate the effectiveness of this therapeutic method, it seemed paramount to...

In 2003, the governments of Belgium, France, Germany, the Netherlands and Switzerland agreed that there was a need in Europe for a treatment programme for adolescents with cannabis use disorders and other behavioural problems. Based on an exhaustive literature review of evidence-based treatments and an international experts meeting, Multidimensiona...

The International Cannabis Need of Treatment (INCANT) project started a few years ago on the initiative of five European countries including Belgium, Germany, France, the Netherland and Switzerland. The purpose of this randomized controlled trial is to compare a new family-based treatment (Multidimensional Family Therapy [MDFT] developed by profess...

L’entretien motivationnel est un outil très intéressant dans la prise en charge des conduites addictives à l’adolescence. Il enrichit la clinique en mettant l’accent sur les différentes étapes de la motivation au changement. Il insiste aussi sur l’attitude et les techniques d’entretien du thérapeute dans l’objectif de renforcer l’alliance thérapeut...

The INCANT project is a research programme which aims to evaluate, in the European context, the effectiveness of the Multidimensional Family Therapy in the care of adolescents addicted to cannabis.

The value of alexithymia assessments in medical and psychiatric research is well documented, but such assessments in cannabis abusers are scarce. Moreover, despite repeated calls for multimethod alexithymia evaluations, researchers typically use 1 self-report only: the 20-item Toronto Alexithymia Scale. Herein, we evaluated (1) the psychometric pro...

Psychiatric comorbidity and impaired emotional functioning have been previously reported in adult substance abusers but have been less well documented in adolescents. Thus, we investigated mental health problems and emotion regulation abilities in adolescents and young adults with cannabis dependence. Moreover, we explored the relationships between...

Over the past ten years, the consumption of cannabis among adolescent has dramatically increased. Today it's becoming one of the main public health problems. Two forms of cannabis are commonly smoked: the leaves and the resin. These substances have a high concentration of tetrahydroxycannabinol, the active molecule of cannabis. Resent research has...

In France today, the treatment of opiate and notably heroin addiction with high-dose buprenorphine (HDB) is widespread. Although this treatment has been successful to some extent, problems persist. One is that some percentage (estimated at 17-47%) of patients "misuses" their HDB, either by intravenous injection or inhalation. This misuse presents a...

Le traitement de la dépendance aux opiacés, et notamment à l’héroïne par la buprénorphine haut dosage (BHD), est aujourd’hui très répandu en France. Même si ce traitement a été d’un apport considérable, certains problèmes demeurent. En effet, un nombre certain (de 17 à 47 %) de patients utilisent la BHD de façon détournée, que ce soit par voie intr...

Over the past 10 years, cannabis use among adolescents has considerably increased. It became a major issue in public health. Today, the cannabis adolescents smoke is more concentrated in tetrahydroxycannabinol. Most of young people are using cannabis to deal with their psychological problems. In a way, cannabis use is more therapeutic than recreati...

Caring for teenage cannabis users Cannabis and other drug use by teenagers is a fact. To confront this problem it is important to create new care units and to develop new therapeutic strategies adapted to the world of adolescence. The Emergence centre is one such place. It is a medical unit specialising in treating addiction among teenagers and you...

Cannabis and other drug use by teenagers is a fact. To confront this problem it is important to create new care units and to develop new therapeutic strategies adapted to the world of adolescence. The Emergence centre is one such place. It is a medical unit specialising in treating addiction among teenagers and young adults located at the Institut...

L’importante evolution de la consommation de psychotropes ces dix dernieres annees necessite une prise en charge specifique des adolescents consommateurs. Il est d’abord essentiel de bien evaluer ce qui releve de l’usage, de l’abus et de la dependance. La therapie bifocale est une reponse possible a cette prise en charge, elle permet a la fois un s...

We analyzed the behavior of teenagers who use cannabis in order to identify the drive leading to cannabis abuse and the perceived benefit which apparently sustains dependency. This analysis pointed out the following issues: identification, alterity modulation, modification of thinking activity, pursual of a psychopathological state of deterioration...

We analyzed the behavior of teenagers who use cannabis in order to identify the drive leading to cannabis abuse and the perceived benefit which apparently sustains dependency. This analysis pointed out the following issues: identification, alterity modulation, modification of thinking activity, pursual of a psychopathological state of deterioration...