Nitrous Oxide-induced Myeloneuropathy Due to Recreational Abuse.

BACKGROUND: The recreational use of nitrous oxide (N2O) has increased in recent years with a noticeable surge in the incidence of nitrous oxide-related myeloneuropathy. OBJECTIVES: To raise awareness of increasing myeloneuropathy due to recreational nitrous oxide misuse in Israel. METHODS: We conducted a case series documenting the clinical and investigative features of eight patients presenting with nitrous oxide-induced myeloneuropathy who were admitted to our departments. RESULTS: Paresthesia was the chief complaint in all patients, with sensory gait ataxia being a common feature, which was often accompanied by Romberg's sign and mild lower limb weakness. Vitamin B12 levels were below the normal range in seven patients, accompanied by elevated homocysteine and methylmalonic acid levels. Magnetic resonance imaging scans revealed hyperintense signals in the dorsal columns of the cervical spine. All patients improved following vitamin B12 injections. CONCLUSIONS: Enhancing awareness, prompting the use of appropriate investigations, and advocating for timely treatment are needed to overcome the risks associated with nitrous oxide misuse.

Assessment of restriction measures implemented during COVID pandemics on community lifestyle choices via wastewater-based epidemiology.

SARS-CoV-2 pandemic affected lifestyle habits, and the mental health and wellbeing of people around the world. In this manuscript, two towns (Paulton and Radstock) and two cities (Bath and Bristol) in Southwest England (> 1 million people) were monitored for two years using Wastewater-Based Epidemiology to assess impacts of COVID (including management measures such as lockdowns and movement restrictions) on community lifestyle choices: illicit drugs, legal stimulants, abused pharmaceuticals and pain pharma usage. Results were triangulated with key dates captured during the pandemic (national lockdowns, restrictions and social distancing measures, etc.). This highlighted a reduction in cocaine intake (as benzoylecgonine) (community average: -36 %) during the first lockdown and an increase in illicit drugs usage after the 3rd national lockdown (community averages for amphetamine: +8 %, cocaine/benzoylecgonine: +39 %, ketamine:+70 %) when restrictions were removed, and social interaction and recreational activities increased. There was a reduction in the intake of caffeine (as 1,7-dimethylxanthine) (community average:-39 %) after 3rd national lockdown coinciding with pubs reopening while nicotine intake (via cotinine) remained stable indicating lack of impact of COVID on smoking habits. Pain pharma often used in pain management resulting from injuries linked with sport activities (naproxen and diclofenac) showed decrease in usage due to lockdown restrictions in physical exercise and access to gyms/sport facilities.

Suicide ideation and psychotropic recreational drug use by adolescents: a systematic review and meta-analysis.

BACKGROUND: Adolescence is characterized by complex and dynamic changes, often involving experimentation, including the use of psychotropic substances. Although it is well-established that recreational psychotropic drugs are associated with suicide ideation in adults, evidence of this association in adolescents remains limited. OBJECTIVE: To investigate the relationship between suicide ideation and psychotropic recreational drug use among adolescents. DESIGN AND SETTING: Systematic review with meta-analysis developed at Universidade Federal de Uberlândia (UFU) and Universidade Estadual de Campinas (UNICAMP), Brazil. METHODS: A search across eight electronic databases for observational studies, without language or publication year restrictions, was conducted. The Joanna Briggs Institute tool was used to assess the risk of bias. Random-effects meta-analyses and odds ratios were used to measure the effects. RESULTS: The search yielded 19,732 studies, of which 78 were included in the qualitative synthesis and 32 in the meta-analysis. The findings indicated that suicidal ideation was 1.96 times more likely (95% confidence interval, CI = 1.47; 2.61) for adolescents who used some drug recurrently and 3.32 times more likely (95%CI = 1.86; 5.93) among those who abused drugs. Additionally, adolescents who used cannabis were 1.57 times more likely (95%CI = 1.34; 1.84) to experience suicide ideation compared with non-users, while cocaine users had 2.57 times higher odds (95%CI = 1.47; 4.50). CONCLUSIONS: Psychotropic recreational drug use is associated with suicidal ideation among adolescents regardless of current or previous use, abuse, or type of substance used. SYSTEMATIC REVIEW REGISTRATION: Registered in the PROSPERO database under the identification number CRD42021232360. https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021232360.

Methamphetamine Poisoning After "Plugging" Intentional Recreational Rectal Use.

BACKGROUND: Methamphetamine is a commonly used illicit substance. The route of administration is usually parenteral, oral ingestion, or snorting. A less common route of administration is placing in the rectum. CASE REPORT: A 28-year-old man presented to the emergency department with acute methamphetamine toxicity within 30 min after intentional rectal administration of methamphetamine for recreational purposes. The patient had hypertension, tachycardia, drug-induced psychosis, elevated creatine kinase, and required rapid sequence intubation and admission to the intensive care unit. Our patient had no clinical evidence of bowel ischemia or injury at the time of discharge. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Rectal administration of methamphetamine is known as "plugging," "booty bumping," "keestering," and "butt whacking." The rectal administration of methamphetamine has the increased risk of severe acute methamphetamine toxicity, as rectal administration bypasses first-pass metabolism, allowing for a more acute onset and higher bioavailability of methamphetamine compared with oral administration. There is the potential for mesenteric ischemia and bowel injury after rectal methamphetamine. Close clinical monitoring for bowel and rectal ischemia or injury are recommended, in addition to management of the sympathomimetic toxidrome.

In-hospital prognosis of acute ST-elevation myocardial infarction in patients with recent recreational drug use.

AIMS: Although recreational drug use may induce ST-elevated myocardial infarction (STEMI), its prevalence in patients hospitalized in intensive cardiac care units (ICCUs), as well as its short-term cardiovascular consequences, remains unknown. We aimed to assess the in-hospital prognosis of STEMI in patients with recreational drug use from the ADDICT-ICCU study. METHODS AND RESULTS: From 7-22 April 2021, recreational drug use was detected prospectively by a systematic urine multidrug test in all consecutive patients admitted for STEMI in 39 ICCUs across France. The primary endpoint was major adverse cardiac events (MACEs) defined by death, resuscitated cardiac arrest, or cardiogenic shock. Among the 325 patients (age 62 ± 13 years, 79% men), 41 (12.6%) had a positive multidrug test (cannabis: 11.1%, opioids: 4.6%, cocaine: 1.2%, 3,4-methylenedioxymethamphetamine: 0.6%). The prevalence increased to 34.0% in patients under 50 years of age. Recreational drug users were more frequently men (93% vs. 77%, p = 0.02), younger (50 ± 12 years vs. 63 ± 13 years, P < 0.001), and more active smokers (78% vs. 34%, P < 0.001). During hospitalization, 17 MACEs occurred (5.2%), including 6 deaths (1.8%), 10 cardiogenic shocks (3.1%), and 7 resuscitated cardiac arrests (2.2%). Major adverse cardiac events (17.1% vs. 3.5%, P < 0.001) and ventricular arrhythmia (9.8% vs. 1.4%, P = 0.01) were more frequent in recreational drug users. Use of recreational drugs was associated with more MACEs after adjustment for comorbidities (odds ratio = 13.1; 95% confidence interval: 3.4-54.6). CONCLUSION: In patients with STEMI, recreational drug use is prevalent, especially in patients under 50 years of age, and is independently associated with an increase of MACEs with more ventricular arrhythmia. TRIAL REGISTRATION: URL: https://clinicaltrials.gov/ct2/show/NCT05063097.

Mucocutaneous Manifestations of Recreational Drug Use.

Recreational drug use is increasingly common in the dermatology patient population and is often associated with both general and specific mucocutaneous manifestations. Signs of substance use disorder may include changes to general appearance, skin, and mucosal findings associated with particular routes of drug administration (injection, insufflation, or inhalation) or findings specific to a particular drug. In this review article, we provide an overview of the mucocutaneous manifestations of illicit drug use including cocaine, methamphetamine, heroin, hallucinogens, marijuana, and common adulterants to facilitate the identification and improved care of these patients with the goal being to connect this patient population with appropriate resources for treatment.

Prevalence of methamphetamine use among gay, bisexual and other men who have sex with men: A systematic review and meta-analysis.

BACKGROUND: International efforts have reduced the availability of methamphetamine precursors, but its distribution and use continue to rise. Methamphetamine use can lead to short- and long-term adverse effects, including addiction, physical and psychosocial health problems, socioeconomic troubles, incarceration, overdose, and death. Gay, bisexual, and other men who have sex with men (MSM) have been shown to have an elevated prevalence of methamphetamine use. METHODS: We conducted a systematic review and meta-analysis to estimate the prevalence of methamphetamine use among MSM. We searched electronic databases, such as PubMed, for peer-reviewed literature published between 2011 and 2022. Data on methamphetamine use were extracted, including study features, location, study design, sampling method, recruitment period, specific MSM subgroups, prevalence period, and demographics. Employing a random-effects model, we computed the pooled prevalence of methamphetamine use among MSM across two prevalence periods: recent use (i.e., one month, three months, six months, one year) and lifetime use. RESULTS: The systematic review included 56 studies with a total of 25,953 MSM who use methamphetamine. Most studies were conducted in Europe, with the highest prevalence reported in the United Kingdom. The studies primarily used cross-sectional or cohort study designs with convenience sampling. The pooled prevalence rates across recent use (i.e., past month, past three months, past six months, and past year) was 15% (95% CI [11-19%]). Additionally, we pooled lifetime use, which was 23% (95% CI [9-38%]). High heterogeneity (I2 > 99%) was observed, indicating significant variation. CONCLUSION: This systematic review and meta-analysis provide a pooled prevalence of methamphetamine use among MSM. The analysis accounts for study design, prevalence period, specific MSM subgroups, and geographical areas to estimate methamphetamine use in diverse settings and populations. The review highlights the need for targeted interventions and harm reduction strategies focused on prevention, education, healthcare access, and stakeholder collaboration to address the multifaceted challenges of methamphetamine use among MSM.

Motivational characteristics of recreational drug use among emerging adults in social settings: an integrative literature review.

Introduction: Recreational drug use by emerging adults has been identified as an increasingly normalized trend in social contexts. It has been documented that the consumption of these substances regularly occurs at music festivals, raves, nightlife and party settings. While it is known that emerging adults participate in these risk-taking behaviors, what is not known is their motivational characteristics for use. The aim of this review to identify and review literature describing the motivations for recreational drug use and drug choice (excluding alcohol, cannabis and tobacco) by emerging adults in social settings to inform selection of appropriately aligned harm reduction education and health messaging interventions. Methods: Whittemore and Knafl's (2005) integrative approach was used to conduct the review. This integrative review was based on a three-step search strategy identifying 2,772 articles published between 2000 and 2022. Eleven studies were included in the review. This review explores the following areas: drug use settings, concurrent drug use, consumer drug knowledge, motives of use including likes and dislikes and peer influence. Results: A range of factors influence motivations of emerging adults to participate in recreational drug use. Similar to the consumption of alcohol, the use of recreational drugs by emerging adults is motivated by their perceived benefits and personal motivations to achieve euphoria, emotional intimacy, social benefits, peer influence, increased confidence and to decrease inhibitions. The review findings suggest that motivational factors that reinforce recreational drug use correlate with the desire to break away from the mundane by seeking pleasure and for the opportunity to create novel experiences. Beliefs about the positive and negative impacts of drug use, together with the desire to achieve emotional satisfaction influence drug taking activity. Conclusion: Recreational drug use has become an increased societal norm amongst drug using peer groups and cannot be entirely prevented. It is to be noted that emerging adults have a basic understanding concerning recreational drugs, however, consumer drug knowledge and interventions that target illicit substances is lacking and should be addressed in future research. Festivals, raves and nightlife settings provide opportunity to implement health promotion as it reaches large number of vulnerable individuals in a short period of time.

Diet and recreational drug use in relation to male reproductive health.

Diet and lifestyle interventions present promising avenues for the improvement of male fertility. Our objective was to review and synthesize the existing observational and experimental studies among humans on the associations of diet and recreational drug use with semen quality and fertility outcomes. The available data on this topic are limited and, at times, conflicting. Nevertheless, on the basis of this review, dietary patterns that are composed of higher intakes of fruits, vegetables, whole grains, nuts, low-fat dairy, and seafood, as well as lower intakes of red and processed meats, sweets, and sugar-sweetened beverages were identified as having the strongest evidence for associations with better sperm quality. However, whether these dietary patterns translate into positive associations with clinical fertility endpoints such as assisted reproductive technology success rates or time-to-pregnancy among couples trying to conceive without medical assistance remains unclear. Male caffeine and alcohol intake, within low-to-moderate ranges of intake, do not appear to be detrimental to semen quality. Yet high-quality research on this topic, focused on clinical fertility endpoints, should continue given the conflicting evidence, particularly in populations undergoing infertility treatment with assisted reproductive technology. Recreational drug use, including marijuana, electronic cigarettes, and other illicit drugs, does not appear to be beneficial for male reproductive health and should be avoided or ceased. In conclusion, men should be encouraged to consume a healthy diet rich in fruits, vegetables, whole grains, nuts, low-fat dairy, and seafood, as well as lacking in red and processed meats, sweets, and sugar-sweetened beverages, and to avoid recreational drug use for improved male reproductive health.

Adverse drug effects as a deterrent against willingness to use in the future among nightclub/festival attendees.

INTRODUCTION: It is largely unknown whether adverse effects experienced from recreational drug use affect willingness to use again. This study determined whether adverse effects from select party drugs affect reported willingness to use again in the next month among a high-risk population-people who attend electronic dance music parties at nightclubs or dance festivals. METHODS: Adults (age ≥ 18) entering nightclubs/festivals were surveyed in New York City in 2018-2022 (n = 2981). Participants were asked about past-month use of common party drugs (cocaine, ecstasy, lysergic acid diethylamide [LSD] and ketamine), whether they had experienced a harmful or very unpleasant effect after use in the past 30 days, and whether they intend to use again in the next 30 days if offered by a friend. The relationship between having experienced an adverse outcome and willingness to use again was examined in a bivariable and multivariable manner. RESULTS: Experiencing an adverse effect after past-month cocaine (adjusted prevalence ratio [aPR] = 0.58, 95% confidence interval [CI] 0.35-0.95) or ecstasy use (aPR = 0.45, 95% CI 0.25-0.80) was associated with lower risk for willingness to use again. Adverse effects related to LSD use were related to lower risk of being willing to use again in the bivariable model, but in multivariable models, risk was not attenuated for willingness to use LSD or ketamine again. DISCUSSION AND CONCLUSIONS: Personally experienced adverse effects can deter willingness to use certain party drugs again in this high-risk population. Interventions targeting cessation of recreational party drug use can likely benefit from focusing on deleterious effects of use that have been experienced.

Recreational Drug Use and Distress From Hallucinations in the General Dutch Population.

BACKGROUND AND HYPOTHESIS: Distress associated with auditory (AH) and visual (VH) hallucinations in the general population was found to be predictive of later need for mental healthcare. It is, therefore, important to understand factors relating to the distress individuals experience from their hallucinations. Hallucinations can easily occur under substance-induced states, but recreational drug use is also known as a self-medication strategy. The current study, therefore, investigated whether recreational drug use by individuals from the general population is associated with the degree of distress experienced from AH and/or VH. STUDY DESIGN: Drug use and distress severity associated with AH (N = 3.041) and/or VH (N = 2.218) were assessed by means of an online survey in the general Dutch population (>14 years of age). STUDY RESULTS: Multiple linear regression revealed that while past month consumption of alcohol was associated with less AH- and VH-related distress, past month cannabis use was associated with more AH- and VH-related distress. Furthermore, past month use of nitrous oxide was associated with more severe VH-related distress. CONCLUSION: Recreational use of alcohol, cannabis, and nitrous oxide may play important differential roles in the degree of distress associated with AH and VH in individuals from the general population. The consumption of these substances could form a potential risk factor for the development of distressing hallucinations or function as a signal marker for their occurrence. Due to the cross-sectional design of the current study, the causal relation between recreational drug use and distressing hallucinations remains to be elucidated.

Facets of Gender Expression and Discrimination in Relation to Alcohol and Other Drug Use Severity Among Sexual Minority Women and Gender Diverse Individuals Assigned Female at Birth.

Purpose: Sexual minority women and gender diverse individuals assigned female at birth (SMW+) consistently report more alcohol and other drug (AOD) use severity than heterosexual women, with greater disparities reported among bisexual plus (bi+) SMW (including bisexual, pansexual, queer, and those with attractions to more than one gender regardless of identity). Furthermore, emerging evidence suggests that SMW with masculine gender expression (e.g., SMW with masculine gender appearance) disproportionately experience problematic AOD use compared to those with feminine gender expression. The minority stress model, which has predominantly been investigated in relation to internalized homonegativity and sexuality-based discrimination, may also account for these AOD use disparities. This study examined gender expression, related discrimination, and AOD use severity among SMW+. Methods: In a 2020 sample of SMW+ (n = 236), we investigated AOD use severity in relation to gender expression (appearance, emotional expression, and gender roles) and gender expression-based discrimination after controlling for internalized homonegativity and sexuality-based discrimination through an online survey. Results: Masculine gender roles were associated with AOD use severity, whereas masculine appearance and emotional expression were not. In multivariable models, gender identity was inconsistently associated with alcohol use severity, sexuality-based discrimination was consistently associated with alcohol use severity and inconsistently associated with other drug use severity, and gender expression-based discrimination was associated with neither. Conclusion: This study emphasizes the importance of examining intersecting aspects of minority identity among SMW+, including facets of gender expression, in relation to AOD use severity.

Estudo retrospectivo de caracterização epidemiológica de queixa, diagnóstico e população pouco explorados num serviço de urgência de psiquiatria da infância e adolescência / Retrospective study of the epidemiological characterization of little explored complaints, diagnoses and population in a child and adolescent psychiatry emergency service

Introdução: A prevalência de transtornos mentais na população pediátrica é presumida em 13,4%. Porém, apenas um em cada seis recebe tratamento apropriado, evidenciando a lacuna entre necessidade e acesso à assistência. Isso resulta em maior risco para situações de crise psicossocial, especialmente entre aqueles em situações de vulnerabilidade com acesso limitado a recursos de tratamento. Diante da diversidade de temas no cenário de urgência em psiquiatria da infância e adolescência (PIA), nosso estudo escolhe tópicos menos explorados, visando compreender fatores sociodemográficos que levam essa população ao serviço de urgência de PIA. Objetivos: Caracterização epidemiológica de queixa (irritabilidade e uso de substâncias), diagnóstico (Autismo) e população (adolescentes em medidas socioeducativas) pouco explorados num serviço de urgência de PIA. Métodos: Estudo transversal retrospectivo realizado pela análise de prontuários dos pacientes, de até 18 anos, atendidos no período de 01 de junho de 2017 a 31 de maio de 2018 na urgência de PIA de um serviço de Belo Horizonte. Resultados: Agressividade, agitação e irritabilidade foram as queixas mais comuns no atendimento de urgência. A irritabilidade esteve associada ao diagnóstico de transtorno de humor sem especificação no atendimento de urgência. Transtorno do Espectro Autista foi o único diagnóstico associado à busca de atendimento por irritabilidade, com taxa de primodiagnóstico de 23% e em idade tardia. O uso de maconha, cocaína e álcool foi comum entre os pacientes atendidos na urgência, e a depressão foi o diagnóstico mais relacionado ao uso de substâncias (SPA). 24,8% dos atendimentos com relato de uso de SPA envolviam adolescentes em medidas socioeducativas (SE). Estes, frequentemente relataram vivências traumáticas e maior chance de quadros de transtornos relacionados ao estresse, de conduta e por uso de SPA. Conclusões: Os achados reforçam a hipótese de que as unidades de urgência podem servir como ponto inicial de diagnóstico e acesso de crianças e adolescentes com transtornos mentais, destacando possíveis lacunas na atenção básica. As unidades de SE parecem precisar aprimorar a abordagem de questões ligadas ao uso de SPA. Compreender as características da população que frequenta a urgência de PIA permite debater estratégias para prevenção e tratamento de transtornos com impacto na rede de cuidados da infância e adolescência.

Introduction: The prevalence of mental disorders in the pediatric population is estimated at 13.4%. However, only one in every six individuals receives adequate treatment, highlighting the gap between necessity and access to care. This disparity results in an elevated risk for psychosocial crisis situations, particularly among those in vulnerable circumstances with limited access to treatment resources. Given the diversity of issues in the context of child and adolescent psychiatry (CAP) emergencies, our study focuses on less explored topics, aiming to comprehend the sociodemographic factors that lead this population to seek urgent care in CAP settings. Objectives: Epidemiological characterization of underexplored complaints (Irritability and Substance Use), diagnosis (Autism) and population (Adolescents imprisoned) in a CAP emergency service. Methods: Retrospective cross-sectional study conducted through the analysis of medical records of patients, up to 18 years, attended at the CAP emergency department of a facility in Belo Horizonte, during the period from June 1, 2017, to May 31, 2018. Results: Aggressiveness, agitation and irritability were the most frequent complaints in emergency care. Irritability was associated with the diagnosis of unspecified mood disorder in the clinical setting. Autism Spectrum Disorder was the only pre-existing diagnosis associated with seeking care due to irritability, with a first-diagnosis rate of 23%, occurring later in age. The use of marijuana, cocaine, and alcohol was prevalent among patients attending the emergency department, with depression being the diagnosis most closely linked to the substance use (SU). Among cases involving reported of SU, 24.8% involved adolescents within socio-educational measures (SE), who often reported traumatic experiences. This group also exhibited higher likelihood of stress-related disorders, conduct disorders, and SU-related conditions. Conclusions: The findings reinforce the hypothesis that emergency units can serve as an initial point of contact for children and adolescents with mental disorders, highlighting potential gaps in primary care. SE units demonstrated a need for improvement in addressing issues related to SU. By comprehending the population frequenting the CAP emergency department, it becomes possible to discuss strategies for the prevention and treatment of disorders with impacts on the childhood and adolescence care network.

Regulamentação e criminalização das drogas no Brasil / Drug regulation and criminalization in Brazil

O presente estudo visa avaliar, através de uma revisão narrativa da literatura, como o controle do Estado exerceu ao longo da história do Brasil a regulamentação do uso de drogas. Método Foram consultados livros, artigos de periódicos acadêmicos indexados, trabalhos completos apresentados em congressos e documentos históricos disponíveis na internet relativos ao tema. Resultados A primeira legislação penal em relação ao uso de drogas surge apenas no Brasil império. Nesse período começam a surgir também os primeiros problemas devido ao uso de drogas. A criação de cursos superiores nas áreas de saúde e de ciências naturais veio a formar profissionais capacitados na manipulação e fiscalização de produtos químicos e farmacêuticos. Com o tempo, observando-se os efeitos, algumas substâncias passam a ser proscritas. Conclusão Por toda história do país, o uso e a regulação das drogas, permearam todas as épocas influenciando na cultura, educação e no modo de vida da população. Atualmente há um grande debate acerca das políticas sobre drogas no Brasil, principalmente sobre a maconha e seus usos terapêuticos, mostrando novamente a influência do Estado sobre a saúde e a segurança da população.

The present study aims to evaluate, through a narrative review of the literature, how State's control has exercised regulation of drug use throughout the history of Brazil. Method Books, articles from indexed academic journals, complete works presented at conferences and historical documents available on the internet relating to the topic were consulted. Results The first criminal legislation related to drug use only appeared in Imperial Brazil. During this period, the first problems due to drug use also begin to appear. The creation of higher education courses in the areas of health and natural sciences resulted in the training of professionals capable of handling and supervising chemical and pharmaceutical products. Over time, observing the effects, some substances become proscribed. Conclusion Throughout the country's history, the use and regulation of drugs has permeated all eras, influencing culture, education and the population's way of life. There is currently a great debate about drug policies in Brazil, mainly regarding marijuana and its therapeutic uses, once again showing the influence of the State on the health and safety of the population.

Triangulating Amsterdam's illicit stimulant use trends by wastewater analysis and recreational drug use monitoring.

Drug consumption estimates are of relevance because of public health effects as well as associated criminal activities. Wastewater analysis of drug residues enables the estimation of drug consumption and drug markets. Short-term and long-term trends of cocaine, MDMA (ecstasy), amphetamine (speed) and methamphetamine (crystal meth), were studied for the city of Amsterdam. MDMA (+41%) and cocaine (+26%) showed significantly higher weekend vs. week consumption, while no differences were observed for the other drugs. The consumption of MDMA, cocaine, amphetamine and methamphetamine significantly increased between 2011 and 2019. Weekly trends emerging from wastewater analyses were supported by qualitative and quantitative data from a recreational drug use monitoring scheme. However, information collected in panel interviews within nightlife networks and surveys among visitors of pubs, clubs and festivals only partially reflected the long term increase in consumption as registered from wastewater analysis. Furthermore, methamphetamine use was not well presented in survey data, panel studies and test service samples, but could be monitored trough wastewater analysis. This illustrates that wastewater analysis can function as an early warning if use and user groups are small or difficult to reach trough other forms of research. All in all, this study illustrates that wastewater-based epidemiology is complementary to research among user groups, and vice versa. These different types of information enable to connect observed trends in total drug consumption to behaviour of users and the social context in which the use takes place as well as validate qualitative signals about (increased) consumption of psychoactive substances. Such a multi angular approach to map the illicit drug situation on local or regional scale can provide valuable information for public health.

Pooled Urine Analysis at a Belgian Music Festival: Trends in Alcohol Consumption and Recreational Drug Use.

BACKGROUND: Recreational drug use has become more and more accepted in society. Availability and purity are rising and new psychoactive substances (NPS) are popping up.The aim of this study was to provide objective data on illicit drug use at a Belgian festival in order to report on arising trends. This may provide additional information to help develop preventive strategies. METHODS: A cross-sectional study took place during a music festival in the summer of 2019, where 43 samples of pooled urine were collected at four different locations and at different moments of the day. Analysis was performed using gas chromatography with a flame ionization detector (GC-FID) to determine ethanol concentrations. Drugs of abuse were quantified using liquid chromatography-tandem mass spectrometry. A qualitative analysis was performed using high-resolution mass spectrometry. RESULTS: Median ethanol concentration was 0.88g/L. Cocaine, 3,4-methylenedioxymethamphetamine (MDMA), amphetamines, ketamine, and cannabis were detected in almost every sample and often in high concentrations. Furthermore, two NPS were detected and a variety of over-the-counter medication and adulterants were also found. DISCUSSION: The findings were largely in-line with trends outlined in the European Drug Report. Striking were the relatively high concentrations of MDMA and ketamine and detection of two synthetic cathinones. Two possible adulterants of cocaine were detected, namely flecainide and amlodipine. CONCLUSION: Music festivals are considered a high-risk setting for alcohol consumption and illicit drug use. Analysis of pooled urine samples at a festival therefore provides a valuable method to evaluate trends and to screen for new substances. Wide-spread use of classical drugs and identification of two NPS were observed during a major international music festival in Belgium. Results need to be interpreted carefully, taking into account the possibilities and limitations of the used techniques and a standardized sampling is required.

Tuberculosis among People Living on the Street and Using Alcohol, Tobacco, and Illegal Drugs: Analysis of Territories in Extreme Vulnerability and Trends in Southern Brazil.

(1) Background: Tuberculosis presents an epidemiological trend toward inequality, especially among people in social exclusion and situations of vulnerability. This study aimed to analyze territories with a concentration of people diagnosed with tuberculosis in a street situation and who partake in chronic use of alcohol, tobacco, and illicit drugs. We also analyzed trends in this health condition in southern Brazil. (2) Methods: Ecological study, developed in the 399 municipalities of Paraná, southern Brazil, with all tuberculosis cases in the homeless population registered in the Information System of Notifiable Diseases between 2014 and 2018. For data analysis, we used descriptive statistics, the Prais-Winsten autoregression method for the time series, and the Getis-Ord Gi technique* for spatial analysis. (3) Results: in total, 560 cases were reported. We found a predominance of alcohol, smoking, and illicit drug users, with an increasing trend in the state and clusters of spatial risk in the East health macro-region. (4) Conclusions: We observed territories with critical levels of highly vulnerable people who use psychoactive substances and are in a street situation. The results highlight the importance of incorporating public policies of social protection for these individuals and resolutive health services that receive these cases and assist in eradicating TB.