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According to the ICD-11 (World Health Organization, 2019), substance use disorders include disorders that result from a single occasion or repeated use of substances (both legal and illegal) that have psychoactive properties; all drugs that are taken in excess have in common direct activation of the brain reward system, which is involved in the reinforcement of behaviours and the production of memories. They produce such an intense activation of the reward system that normal activities may be neglected. Instead of achieving reward system activation through adaptive behaviours, drugs of abuse directly activate the reward pathways. The pharmacological mechanisms by which each class of drugs produces reward are different, but the drugs typically activate the system and produce feelings of pleasure, often referred to as a ‘high’ (American Psychiatric Association, 2013). This chapter will cover all substance use in people with intellectual disability, whether it is a problem, and alternative treatments.
Substance use among lawyers is a common way to self-medicate stress, anxiety, and depression and to fuel overwork. To facilitate an understanding of how substances of abuse work in the brain, it is helpful to grasp the basics of neurotransmission. Information travels through the brain via chains of neurons. This information is an electrical impulse while in the brain cell, but to travel across the gap between neurons, the information uses chemicals called neurotransmitters. The site of action for self-medicating substances is at that gap, which is called a synapse. Different substances cause various changes in the brain by influencing the synapses of those lawyers who use them. These drugs are divided by substances that stimulate and can fuel overwork (caffeine, nicotine, amphetamine, cocaine) and sedatives that can calm stress and anxiety (alcohol, cannabis, opioids). Some lawyers use prescribed antidepressant medications. All of them impact the brain at the gap between brain cells, the synapse, where communication involves neurotransmitters and their receptors.
We examined whether cannabis use contributes to the increased risk of psychotic disorder for non-western minorities in Europe.
Methods
We used data from the EU-GEI study (collected at sites in Spain, Italy, France, the United Kingdom, and the Netherlands) on 825 first-episode patients and 1026 controls. We estimated the odds ratio (OR) of psychotic disorder for several groups of migrants compared with the local reference population, without and with adjustment for measures of cannabis use.
Results
The OR of psychotic disorder for non-western minorities, adjusted for age, sex, and recruitment area, was 1.80 (95% CI 1.39–2.33). Further adjustment of this OR for frequency of cannabis use had a minimal effect: OR = 1.81 (95% CI 1.38–2.37). The same applied to adjustment for frequency of use of high-potency cannabis. Likewise, adjustments of ORs for most sub-groups of non-western countries had a minimal effect. There were two exceptions. For the Black Caribbean group in London, after adjustment for frequency of use of high-potency cannabis the OR decreased from 2.45 (95% CI 1.25–4.79) to 1.61 (95% CI 0.74–3.51). Similarly, the OR for Surinamese and Dutch Antillean individuals in Amsterdam decreased after adjustment for daily use: from 2.57 (95% CI 1.07–6.15) to 1.67 (95% CI 0.62–4.53).
Conclusions
The contribution of cannabis use to the excess risk of psychotic disorder for non-western minorities was small. However, some evidence of an effect was found for people of Black Caribbean heritage in London and for those of Surinamese and Dutch Antillean heritage in Amsterdam.
Cocaine is one of the most used recreational drugs. Whilst medical uses exist, chronic recreational nasal use of cocaine is associated with progressive destruction of the osseocartilaginous structures of the nose, sinuses and palate – termed cocaine-induced midline destructive lesions.
Case report
A 43-year-old male with a history of chronic cocaine use, presented with conductive hearing loss and unilateral middle-ear effusion. Examination under anaesthesia revealed a completely stenosed left Eustachian tube orifice with intra-nasal adhesions. The adhesions were divided and the hearing loss was treated conservatively with hearing aids. Whilst intra-nasal cocaine-induced midline destructive lesions are a well-described condition, this is the first known report of Eustachian tube stenosis associated with cocaine use.
Conclusion
This unique report highlights the importance of thorough history-taking, rhinological and otological examination, and audiometric testing when assessing patients with a history of chronic cocaine use. This paper demonstrates the complexity of managing hearing loss in such cases, with multiple conservative and surgical options available.
Edited by
Rachel Thomasson, Manchester Centre for Clinical Neurosciences,Elspeth Guthrie, Leeds Institute of Health Sciences,Allan House, Leeds Institute of Health Sciences
substances other than alcohol (see Chapter 8). The purpose is to introduce the reader to the wide variety of substances that are abused by explaining why people may use them, why the use can be harmful and broadly how this is managed. Liaison psychiatry is the bridge between inpatient care and community care and this complex relationship is demonstrated herein when discussing the management of these cases that require the input of a variety of clinicians. The substances detailed are further subdivided to cover background information, acute intoxication, toxicity, withdrawal states and other management advice. ‘Top tips’ are included where appropriate, which are practical considerations to make based on day-to-day experience working in the field.
This study aimed to explore the current practices of the UK rhinology consultant body in regard to cocaine screening in nasal reconstructive surgery.
Method
A 12-question online survey was distributed to rhinology consultants (October 2021 to February 2022) currently practising in the UK.
Results
A total of 55 consultants responded. Fifty-three per cent asked patients about cocaine use prior to consideration of surgery, and 45 per cent performed cocaine testing prior to consideration of surgery. Of these, the majority employed urine testing alone (60 per cent), with hair testing being less common as a single screening modality (4 per cent). Sixteen per cent opted for both urine and hair testing. The most common reasons for not performing cocaine testing included patient history or clinical examination that was not suggestive of cocaine use (44 per cent), lack of formal guidelines (33 per cent) and lack of testing availability (27 per cent). Sixty-four per cent were in favour of a national policy for cocaine screening.
Conclusion
There is marked variation in cocaine screening practices for nasal reconstructive surgery among UK rhinologists.
Cocaine is a highly addictive psychostimulant that affects synaptic activity with structural and functional adaptations of neurons. The transmembrane synaptic vesicle glycoprotein 2A (SV2A) of pre-synaptic vesicles is commonly used to measure synaptic density, as a novel approach to the detection of synaptic changes. We do not know if a single dose of cocaine suffices to affect pre-synaptic SV2A density, especially during adolescence when synapses undergo intense maturation. Here, we explored potential changes of pre-synaptic SV2A density in target brain areas associated with the cocaine-induced boost of dopaminergic neurotransmission, specifically testing if the effects would last after the return of dopamine levels to baseline.
Methods:
We administered cocaine (20 mg/kg i.p.) or saline to rats in early adolescence, tested their activity levels and removed the brains 1 hour and 7 days after injection. To evaluate immediate and lasting effects, we did autoradiography with [3H]UCB-J, a specific tracer for SV2A, in medial prefrontal cortex, striatum, nucleus accumbens, amygdala, and dorsal and ventral areas of hippocampus. We also measured the striatal binding of [3H]GBR-12935 to test cocaine’s occupancy of the dopamine transporter at both times of study.
Results:
We found a significant increase of [3H]UCB-J binding in the dorsal and ventral sections of hippocampus 7 days after the cocaine administration compared to saline-injected rats, but no differences 1 hour after the injection. The [3H]GBR-12935 binding remained unchanged at both times.
Conclusion:
Cocaine provoked lasting changes of hippocampal synaptic SV2A density after a single exposure during adolescence
This opinion held that a viable fetus was a “child” under the state’s criminal child endangerment statute. The defendant was accused of using illegal drugs during her pregnancy and the South Carolina Supreme Court held that her alleged drug use could serve as the basis for a child endangerment charge. This opinion is cited as severely eroding the reproductive rights and bodily autonomy of women.
Latin Americans can feel insecure for many different and overlapping reasons. U.S. and Latin American leaders don’t always agree on what these are, what causes them, and what should be done about them. Given all the previous chapters, this shouldn’t surprise us. In 2021, the Office of the Director of National Intelligence pointed to threats stemming from economic crisis (exacerbated by Covid-19), crime, narcotics trafficking, corruption, and Venezuela. It also noted the threatening presence of China and Russia. Latin American leaders show widely varying degrees of agreement about these. This chapter highlights U.S. policy dealing with insecurity and Latin American divergence from it. The dynamics of the economy, as well as extrahemispheric actors, are already addressed in other chapters. That leaves a focus on crime, drug trafficking, and corruption, but also considered is climate change, which the Organization of American States keeps front and center.
Patients with comorbid cocaine and alcohol dependence have a worse prognosis with lack of adherence to follow-up and treatment, frequent psychosocial problems, and higher rates of relapse [1]. Concurrent use of both substances produces cocaethylene, which is associated with more toxicity than cocaine alone [2].
Objectives
To determine the efficacy of disulfiram compared to nalmefene in the treatment of comorbid cocaine and alcohol use.
Methods
A quasi-experimental open study was designed on 41 outpatients, with a follow-up of at least 1 year at the Mental Health Unit, aged between 18 and 65 years, diagnosed with cocaine and alcohol dependence (ICD-10). A minimum simultaneous weekly consumption of 2 grams of cocaine and 12 SD (Standard Drink) of alcohol during the month before, described by self-records was established. Treatment with oral disulfiram 250mg/day was assigned to 21 patients, and with oral nalmefene 18mg/day to 20 individuals. Observation period was for 6 months. Urinalysis and alcohol breath test were carried out twice a week. Abstinence was defined by obtaining negative results for at least 4 consecutive weeks. Statistical analysis were performed using SPSS v21.0 (significance p<0.05).
Results
61.9% of patients treated with disulfiram achieved a minimum of 4 consecutive weeks of abstinence from cocaine and alcohol, compared to 40% in the nalmefene group (χ²=1.188; gl=1; p=0.276). There were no significant differences.
Conclusions
Disulfiram or nalmefene monotherapy seems clinically ineffective or insufficient in reducing the combined use of cocaine and alcohol. Further research is needed to assess the effect of both drugs simultaneously.
Valproic acid is an antiepileptic drug used in different fields of Psychiatry. It is known mostly for its use in managing patients with bipolar affective disorder. In psychiatry of addiction, there is still no approved indications for its usage, but it is widely prescribed in treating alcohol and cocaine abuse, due to the existence of studies in these addictions.
Objectives
This review aims to clarify the relation between valproic acid and dependences, particularly cocaine.
Methods
Non-systematic literature review using a PubMed search, using the following key words: “valproate”; “cocaine use”.
Results
Cocaine dependence can decrease GABA levels in humans. Valproic acid has multiple mechanisms that favour the synthesis of GABA, potentiating its release and postsynaptic GABAergic response. Because of this, valproic acid was found effective in promoting abstinence and in reducing the use of cocaine. There are studies that support the valproic acid’s use in alcohol and cocaine dependences. Valproic acid has been shown to be promising in relapse prevention. It has also showed efficacy in the management of impulsivity and irritability, what makes it useful in managing patients with borderline personality disorder – patients at higher risk for alcohol or substance use disorders.
Conclusions
Cocaine addiction involves different phenomena and may respond to distinct pharmacologic approaches. Although some studies need to be confirmed by larger clinical trials, valproic acid seems a promising agent as one of some potential treatments for cocaine dependence. Further studies are required in this field to come to more reliable conclusions.
The use of psychoactive substances in pregnancy has a similar profile to the general population, in which ethyl alcohol and tobacco are the most widely used drugs, followed, to a much lesser extent, by marijuana and cocaine. Cocaine is a powerful stimulant of the Central Nervous System. Like other smokable cocaines, PBC is highly fat soluble and rapidly crosses the blood-brain barrier, causing maternal-fetal harm when consumed during pregnancy. Being its pathophysiological mechanism the vasoconstriction of uterine and fetal vessels. Obstetric complications related to this toxic mechanism of action include: increased risk of spontaneous abortion, premature detachment of the normal inserted placenta, and intrauterine growth restriction.
Objectives
We present how was the management of a 26-year-old woman, polytoxic, unemployed, living in a “squatting house”, referred from the Gynecology and Obstetrics service to the Addictive Behavior Unit, due to fetal alterations seen in ultrasound follow-ups. Presenting the fetus: delayed intrauterine growth, and bilateral ventriculomegaly with dilation of the left ventricle.
Methods
We report this case to social services and we started doing a weekly poison check. Presenting positive controls for both: cannabis and cocaine.
Results
Due to the physical, psychological and environmental situation of the patient, the withdrawal of custody of her child is being considered.
Conclusions
These types of cases must be treated in a multidisciplinary way, with awareness of the disease and the consequences of continuing to consume must be addressed.
Cerebrovascular disorders, contribute to the morbidity and disability associated with illicit drug use, which may be the most common predisposing condition for stroke among patients under 35 years of age. We present the case of young man with multiple illicit drug addiction and no other vascular risk factors, who presented with acute ischemic stroke and complex cardiovascular etiopathogenic mechanism. We summarize stroke mechanisms by illicit drug and stroke type and suggestion for the management of these challenging cases
Drugs and addiction are relevant to the present study: (1) by analogy with drug-taking, the term ‘addiction’ can be applied to serial killing even where drugs are not involved and (2) drugs play an important role in the lives of some serial lust killers. The discussion first turns to two killers where the term ‘addiction’ has been applied but where it appears that drugs were not used. It then looks at two examples of drug-associated killing. Serial lust killer Michael Ross described feeling assailed by intrusive thoughts urging the rape and murder of women. He published an account of his experience in an academic journal concerned with addiction. Joel Rifkin was adopted and seriously bullied by his peers. He described his sexual behaviour as addictive and gave evidence of ambivalence in his killings. Anthony Sowell appears to have been influenced in his sexual addiction by extensive use of crack cocaine.
This chapter begins with an analysis of the Colombian state’s efforts to transform the Caguán frontier region of Caquetá into a site of land colonization, settlement, and agrarian development in the 1960s. It demonstrates that these state-directed agrarian development initiatives lacked the political and economic support of Colombian elites, which resulted in the transformation of the region into a site of large-scale cattle ranching under the despotic rule of Colombia’s cattle rancher association, Fedegán. It then shows how the movement of the FARC guerrillas into the region, followed by their involvement in taxing and regulating the region’s emerging coca economy, helped generated a counter-hegemonic coca-producing labor regime that was effective in protecting local migrants from the displacement and marginalization they had experienced under the auspices of Fedegán. It ends with a discussion of the similarities and differences between the FARC’s counter-hegemonic regulatory interventions in the coca regime with Fedecafé’s hegemonic interventions in the coffee regime.
This chapter begins by analyzing how the adoption of neoliberal agrarian policies in the 1990s intensified land struggles in the region by generating new waves of displaced migrants who became incorporated into the coca economy of the FARC while also transforming the cattle industry from a domestic meat and hide supplier into an exporter of dairy products for the world market.It shows how FARC control of the region remained strong until the late 1990s and early 2000s, when the region became a geographic focal point of the state’s new neoliberal development strategies. I then demonstrate how and why previous efforts to dislodge the guerrilla threat through US-backed Cold War containment strategies failed, but that the balance of power shifted to the Colombian military in the late 1990s and early 2000s, following a massive influx of US military aid that was appropriated under the aegis of the US War on Drugs and War on Terror.I conclude this chapter with a discussion of the future economic prospects of the region’s cocalero farmers and workers in the absence of FARC protection or a developmental alternative to capitalist accumulation through dispossession.
Contemporary scholars debate the factors driving despotic labour conditions across the world economy. Some emphasize the dominance of global market imperatives and others highlight the market's reliance upon extra-economic coercion and state violence. At the Margins of the Global Market engages in this debate through a comparative and world-historical analysis of the labour regimes of three global commodity-producing subregions of rural Colombia: the coffee region of Viejo Caldas, the banana region of Urabá, and the coca/cocaine region of the Caguán. By drawing upon insights from labour regimes, global commodity chains, and world historical sociology, this book offers a novel understanding of the broad range of factors - local, national, global, and interregional - that shape labour conditions on the ground in Colombia. In doing so, it offers a critical new framework for analysing labour and development dynamics that exist at the margins of the global market.
This introduces the topic of multilateral drug control, its contemporary relevance and the areas under examination within the book. It highlights the key themes grouped by three overarching focuses: historical, contemporary-legal and international relations theory. It examines the major debates under way in UN drug control and their direct relation to the historical-legal regulatory discussion encapsulated within the book. It outline existing historiography on international drug control and examines more recent developments. It points to continuing gaps in historiography, international relations, legal and policy literature which this book will fill. In particular it highlights the extensive literature on international legal fragmentation and its relevance for drug control debates. It offers an overview of regime theory and international relations approaches, suggesting a new and emerging framework based on evaluating drug control as a ‘regime complex’ in a similar lineage to climate change and intellectual property regimes, which will be covered in a more breadth in the Conclusion.
This chapter examines the legal legal of the Single Convention and its successor treaties. The passage of the Single Convention represented a high-water mark in the international regulatory system. While it contained little in terms of innovation, it streamlined the complex array of drug treaties, while moving the terrain of control forward marginally. It essentially solidified an economic regulatory framework for a global licit commodity market in certain essential medicines. To enforce this market it mandated certain action around controlling and prohibiting non-medical production and manufacturing. Key questions around dealing with ‘addiction’ and suppressing non-medical consumption were left largely unanswered. The US may have lost the battle around the Single Convention and control of the system in the 1960s but they would enter the 1970s ready to refight many of these battles, beginning with the declaration of the ‘war of drugs’ and an aggressive new round of bilateral drug diplomacy. Ultimately the ‘war on drugs’ was not an inevitable outgrowth of these documents, but instead represented a specific set of interpretations, bureaucratic and normative trajectories and member state implementations.
This chapter argues that whereas much of the past century was geared towards a legal and institutional homogenisation of international drug control, the coming decades appear underpinned by recourse to ‘policy pluralism’ as a mechanism to enable policy evolution. It is precisely these endogenous processes of pluralism, devolution and increasing diversity of global drug policies that provide the most promising avenues for various actors to influence policies at local, national, regional and international levels. It further argues that the international drug control system is undergoing a long-term process of fragmentation and evolution towards what international relations scholars in other spheres would term a ‘regime complex’. It concludes by suggesting that these endogenous regime changes likely provide the greatest opportunity to draw exogenous actors and regimes into the system’s orbit and thereby modernise and adapt drug policies to new global realities.