Disorder Relapse Research Articles

Cigarette Smoking Is Associated With Increased Risk of Substance Use Disorder Relapse: A Nationally Representative, Prospective Longitudinal Investigation.

Little is known about the relationship between cigarette smoking and long-term outcomes for substance use disorder (SUD). The current study examined the association between smoking and SUD relapse among adults with remitted SUDs. Analyses were conducted on respondents who completed Waves 1 and 2 of the National Epidemiologic Survey on Alcohol and Related Conditions and met DSM-IV criteria for substance abuse and dependence prior to but not during the year before the Wave 1 interview (n = 5,515). Relationships between smoking status (Wave 2 smoking vs nonsmoking among Wave 1 smokers; Wave 2 smoking vs nonsmoking among Wave 1 nonsmokers) and Wave 2 substance use and SUD relapse were examined using logistic regression analyses. Analyses were adjusted for demographics, psychiatric and alcohol use disorders, nicotine dependence, and SUD severity. In the fully adjusted models, continued smoking at Wave 2 among Wave 1 smokers was associated with significantly greater odds of substance use (OR = 1.56, 95% CI, 1.10-2.20) and SUD relapse (OR = 2.02, 95% CI, 1.65-2.47) compared to Wave 2 nonsmoking. In the fully adjusted model, smoking at Wave 2 among Wave 1 nonsmokers was associated with significantly greater odds of SUD relapse compared to Wave 2 nonsmoking (OR = 4.86, 95% CI, 3.11-7.58). Continued smoking among smokers and smoking initiation among nonsmokers were associated with greater odds of SUD relapse. More research is needed to examine the timing of SUD relapse in relation to smoking behaviors. Incorporating smoking cessation and prevention efforts into substance abuse treatment may improve long-term substance use outcomes for adult smokers with SUDs.

Botulinus toxin in complex treatment of myofacial pain syndrome

The aim of the study was to assess the efficacy of type A Botulinus toxin (BTA) in pain release by TMJ functional pain disorders. The study included 211 patients with TMJ functional pain disorder (20.4% males and 79.6% females; mean age 45.3 years). The patients underwent clinical examination and bioelectric activity assessment of masticatory muscles by electromyography (EMG). EMG specters of 20 healthy volunteers with intact dental arches served as a control. After examination BTA was injected in muscular pain trigger points. All patients had muscular hypertonus, unilateral in 88.6% and bilateral in 11.4%. EMG showed the decrease of masticatory muscle activity on affected side to mean values of 165±20 mkV (30.0%, p<0.05) and on contralateral side to 460±31 mkV (89.6%, p>0.05). BTA injections in tensed muscles released significantly muscle-induced facial pain and improved quality of life. During 6 months follow up myofacial pain disorder relapse was seen in 3 patients. The results allow recommending BTA injection in muscular pain trigger points for treatment of myofacial pain syndrome and prolonged muscle relaxation.

Corticotropin-releasing hormone and dopamine release in healthy individuals

Corticotropin-releasing hormone (CRH) is a key component of the neuroendocrine response to stress. In animal models, CRH has been shown to modulate dopamine release, and this interaction is believed to contribute to stress-induced relapse in neuropsychiatric disorders. Here we investigated whether CRH administration induces dopamine release in humans, using positron emission tomography (PET). Eight healthy volunteers (5 female, 22–48 years old) completed two PET scans with the dopamine D2/3 receptor radioligand [11C]-(+)-PHNO: once after saline injection, and once after injection of corticorelin (synthetic human CRH). We also assessed subjective reports and measured plasma levels of endocrine hormones (adrenocorticotropic hormone and cortisol). Relative to saline, corticorelin administration decreased binding of the D2/3 PET probe [11C]-(+)-PHNO, suggesting dopamine release. Endocrine stress markers were also elevated, in line with activation of the hypothalamic-pituitary-adrenal axis, but we detected no changes in subjective ratings. Preliminary results from this proof-of-concept study suggests that CRH challenge in combination with [11C]-(+)-PHNO PET may serve as an assay of dopamine release, presenting a potential platform for evaluating CRH/dopamine interactions in neuropsychiatric disorders and CRH antagonists as potential treatment avenues.

Applying the ‘Cognitive Bias Modification’ concept to smoking cessation – A Systematic Review

Abstract. Background: In recent years, new neurocognitive explanatory approaches such as dual-process theories offer significant progress in understanding long-term relapse in substance use disorders. Based on such explanatory concepts stemming from basic research, novel methods of intervention have been deduced which focus on directly changing cognitive biases. The efficacy of these Cognitive Bias Modification (CBM) concepts has been evaluated in a growing number of studies in the context of different substance use and addictive disorders. By now, there are also first findings for using CBM in the context of smoking. Objectives: To evaluate the empirical evidence, whether CBM qualifies i) for reducing attentional or approach bias towards smoking-related cues, ii) for effectively reducing the high relapse rates in smoking cessation, iii) for the reduction of smoking behaviour and iv) craving. Methods: The systematic evidence search has been carried out in clinical databases (Cochrane Library, PsycArticles, PSYNDEX, PsycINFO, Medline) as well as via manual reverse search. Finally, 12 studies have been identified which met the inclusion criteria (RCT, CBM interventions for smokers; outcomes: change in attentional or approach bias, craving, number of cigarettes smoked, abstinence). Results: Despite the heterogeneity of the studies in terms of sample selection, realisation of interventions and methodological aspects, the findings collectively indicate that different forms and ‘dosages’ of CBM interventions can influence attentional or approach bias in smokers. Also, positive effects on craving and motivation to quit could be detected. Effects on smoking behaviour are inconsistent and often statistically non-significant. First online applications showed encouraging results. Discussion: The results concerning the efficacy of CBM in smoking cessation are still rudimentary and inconsistent. However, a large portion of the studies was not conducted under naturalistic conditions, but rather in laboratories with non-treatment seekers or participants partially motivated to quit. Despite these limitations, the findings can be evaluated as encouraging. The results suggest that CBM will be implemented in routine care as an adjunct intervention within a behavioural therapy-oriented cessation programme. However, specific studies which assess the efficacy of CBM as a component for relapse prevention in smoking cessation intervention in routine care are still lacking.

Psychiatric, Demographic, and Brain Morphological Predictors of Relapse After Treatment for an Alcohol Use Disorder.

Relapse in alcohol use disorders (AUD) is related to a complex interplay among multiple biological, psychiatric, psychological, and psychosocial factors, which may change dynamically during and after treatment. At treatment entry for AUD, morphological abnormalities in anterior frontal regions and the insula have been observed in those who ultimately relapse following treatment. The goal of this study was to determine whether anterior frontal and insula measures of brain thickness, surface area, and volume predict posttreatment drinking status (i.e., relapser or abstainer) over an extended period after outpatient treatment for AUD, while concurrently considering common psychiatric, psychological, and psychosocial factors previously associated with relapse. Alcohol-dependent individuals (n=129) were followed for 18months after treatment to determine posttreatment drinking status (abstainers [n=47] or relapsers [n=82]). Brain morphometrics were derived from FreeSurfer. Receiver operating characteristic (ROC) curve analysis was used to identify the regional brain thickness, surface area, and volume (all scaled to intracranial volume), demographic, psychiatric, other substance use (e.g., cigarette smoking), and alcohol consumption variables, obtained at entry into treatment, that best predicted posttreatment drinking status. Survival analyses determined variables that were related to duration of abstinence after treatment. ROC analyses indicated that mood disorders, education, and volumes of the right caudal anterior cingulate cortex (ACC), right rostral ACC, and total right frontal gray matter were significant predictors of posttreatment drinking status. Among relapsers, survival analyses showed smokers and individuals with a comorbid medical condition relapsed earlier after treatment. Additionally, a greater frequency of smokers relapsed within 6months of AUD treatment. Results reinforce that relapse in AUD is a function of multiple biological, psychiatric, psychological, and psychosocial factors. Effective treatment of depressive disorders and cigarette smoking concurrent with AUD-focused interventions may promote better treatment outcomes.

Students Tendency Toward Illicit Drug Use: The Role of Perceived Social Support and Family Function in Iran

Background: It is proven that perceived social support and family function are important in the treatment and prevention of lapse or relapse in drug use disorders, but the role of these factors, especially when added together, are less evaluated in primary prevention of drug dependence. Objectives: The current study aimed to investigate the relationship between perceived social support and family functioning in the students' tendency toward illicit drug use. Methods: The study had a cross-sectional design. A total of 156 students of Allameh Tabatabaei University were selected in the 2013 - 2014 academic year in Tehran, Iran, and the required information was obtained from them by three questionnaires: perceived social support, family functioning, and students’ tendency toward illicit drug use. Data were analyzed with the Pearson correlation coefficient and multiple regression coefficients, by SPSS version 21. Results: There was a significant relationship (P < 0.005) between perceived social support and students’ tendency toward illicit drug use. The family functioning also had a significant correlation with the tendency of students towards drug misuse (P < 0.001). Based on multiple regression coefficients, perceived social support and its components and family function were strong variables to predict illicit drug use potential (P < 0.001). Conclusions: Improving social support as well as constructive and positive functioning of the family can reduce students’ tendency towards illicit drug use. On the contrary, weak social networks and lack of constructive communication between the individuals and society, as well as stressful family environment are among factors of students’ and young people’ tendency towards drug misuse.

Is the Construct of Relapse Heuristic, and Does It Advance Alcohol Use Disorder Clinical Practice?

Alcohol use disorder (AUD) relapse is a construct that has been of major clinical and research interest but has been inconsistently defined. The purpose of this study was to review the definitions of AUD relapse that have been used in clinical research as a basis for drawing conclusions about its heuristic value. A systematic review of the literature was conducted on empirical studies that (a) were published in peer-reviewed journals, (b) were published between 2010 and 2015, (c) were written in English, and (d) provided a definition of alcohol relapse (or lapse) that was used in the study. The review yielded 139 individual studies that met inclusion criteria. The studies showed wide variability in how relapse was defined and interpreted in the literature, and there was little direct empirical or theoretical rationale provided for the definitions of relapse that were chosen. Furthermore, the concept of AUD relapse as a discrete state is not consistent with the empirical literature on the clinical course of alcohol consumption. We conclude that the heuristic value of AUD relapse as currently studied is low. An alternative approach that embeds the construct in theory and data on the clinical course of alcohol consumption and aligns with current trends in healthcare would seem to have a better chance of improving AUD clinical decision-making and knowledge about AUD in general.

Factors associated with relapse after a response to electroconvulsive therapy in unipolar versus bipolar depression

BackgroundWhile electroconvulsive therapy (ECT) treatment for depression is highly effective, the high rate of relapse is a critical problem. The current study investigated factors associated with the risk of relapse in mood disorders in patients in which ECT was initially effective. MethodThe records of 100 patients with mood disorders (61 unipolar depression, 39 bipolar depression) who received and responded to an acute ECT course were retrospectively reviewed. Associations between clinical variables and relapse after responding to acute ECT were analyzed. The Ethics Committee of NHO Kure Medical Center approved the study protocol. ResultsAfter one year, the percentage of relapse-free patients was 48.7%. There was no significant difference between patients with either unipolar or bipolar depression who were relapse-free (unipolar: 51.1%, bipolar: 45.5%, P=0.603). Valproate maintenance pharmacotherapy in unipolar depression patients was associated with a lower risk of relapse compared to patients without valproate treatment (multivariate analysis, hazard ratio: 0.091; P=0.022). Lithium treatment, reportedly effective for unipolar depression following a course of ECT, tended to lower the risk of relapse (hazard ratio: 0.378; P=0.060). For bipolar depression, no treatment significantly reduced the risk of relapse. LimitationsThe current findings were retrospective and based on a limited sample size. ConclusionsThe relapse-free rate was similar between unipolar and bipolar depression. Valproate could have potential for unipolar depression patients as a maintenance therapeutic in preventing relapse after ECT.

Do Alcohol Relapse Episodes During Treatment Predict Long-Term Outcomes? Investigating the Validity of Existing Definitions of Alcohol Use Disorder Relapse.

The construct of relapse is used widely in clinical research and practice of alcohol use disorder (AUD) treatment. The purpose of this study was to test the predictive validity of commonly appearing definitions of AUD relapse in the empirical literature. Secondary analyses of data from Project MATCH and COMBINE were conducted using 7 definitions of "relapse" based on drinking quantity within a single drinking episode: any drinking; at least 4/5 drinks for women/men; at least 4.3/7.1 drinks for women/men; at least 6/7 drinks for women/men; at least 6 drinks; at least 7/9 drinks for women/men; and at least 8/10 drinks for women/men. Relapse was used to predict alcohol consumption, related consequences, and nonconsumption outcomes (quality of life, psychosocial functioning) at the end of treatment and up to 1year posttreatment. Regression analyses indicated within-treatment relapse definitions significantly predicted end-of-treatment alcohol consumption and alcohol-related consequences. Heavy drinking definitions were generally more predictive than the any drinking definition, but no single heavy drinking definition was consistently a better predictor of outcomes. Relapse definitions were less predictive of longer-term alcohol-related outcomes and both shorter- and longer-term nonconsumption outcomes, including health and psychosocial functioning. One particular definition of relapse did not consistently stand out as the best predictor. Advances in AUD research may require reconceptualization of relapse as a multifaceted dynamic process and may consider a wider range of relevant behaviors (e.g., health and psychosocial functioning) when examining the change process in individuals with AUD.

Research Roundup

Long‐acting injectable antipsychotics may support bipolar disorder relapse prevention Doctors increasingly prescribe antidepressants for other conditions Repeated doses of ketamine maintain decreases in suicidal ideation Most patients on clozapine rechallenge experience no hematologic effect Study suggests efficacy of psilocybin in depression treatment

Early indicators of relapses vs pseudorelapses in neuromyelitis optica spectrum disorder.

Objective:The purpose of this study was to review cases of neuromyelitis optica spectrum disorder (NMOSD) relapses and pseudorelapses to identify early features that differentiate between them at onset of symptoms.Methods:This was a retrospective analysis of 74 hospitalizations of patients with NMOSD who were admitted to the Johns Hopkins Hospital for workup and treatment of a presumed relapse. Standard workup included MRI and blood and urine testing for metabolic and infectious etiologies. The gold standard for a relapse was defined as new or worsening symptoms and a change in neurologic examination correlating with a new or enhancing MRI lesion. A pseudorelapse was a clinical exacerbation with similar symptoms and signs but the MRI was negative, and workup identified an alternative cause for the symptoms that, when treated, resulted in the improvement of neurologic symptoms. Factors considered to be early predictors of relapses vs pseudorelapses were analyzed using the Fisher test.Results:Among 74 NMOSD hospitalizations for presumed relapse, 57 were confirmed relapses while 17 had a negative MRI and an identifiable cause of pseudorelapse. The most common causes of pseudorelapse were infection, pain, and dysautonomia. The only early predictor that reliably differentiated relapse from pseudorelapse among this NMOSD patient population was vision loss (p = 0.039). Race, sex, presentations of weakness, numbness, and bowel/bladder dysfunction, white blood cell count, and urinary tract infection were not different among patients with relapses vs pseudorelapses.Conclusions:Vision loss in NMOSD is strongly suggestive of a true relapse vs a pseudorelapse. Pseudorelapses localized to the spinal cord in patients with previous myelitis presented similarly to true relapses and could only be ruled out by a negative MRI.

Continuation treatment with escitalopram reduces body dysmorphic disorder relapse

In what is believed to be the first relapse prevention study in body dysmorphic disorder (BDD), researchers found that 6 months of continuation treatment with escitalopram resulted in fewer relapses and an increased time to relapse when compared with placebo. However, patients receiving escitalopram in the study's continuation phase did not see significant improvement in psychosocial functioning or quality of life when compared with placebo patients, the researchers reported.

Predictors of Incidence, Remission and Relapse of Axis I Mental Disorders in Young Women: A Transdiagnostic Approach.

Incidence of mental disorders in young women was predicted by neuroticism and low global functioning. There seems to be a need for preventive interventions addressing high neuroticism and low global functioning. Remission in young women was predicted by positive mental health. It may be helpful to include resource-based interventions, which can strengthen or support general positive mental health. Relapse in young women was predicted by two negative psychological factors: high neuroticism and reporting many dysfunctional attitudes. Psychotherapy addressing the characteristics and behaviour of neurotic patients might be beneficial. Interventions should also focus on addressing and changing dysfunctional attitudes.

Nalmefene and alcohol use disorder. Evaluation of clinical cases at a treatment centre for drug addicts

IntroductionAlcohol abuse causes dopamine release in the mesolimbic system, which activates the reward circuit. This is linked to an interdependent opioid, serotonergic and endocannabinoid system. Nalmefene is a modulator of the endogenous opioid system, with antagonistic effect on mu and delta receptors, and a partial agonist activity kappa. This means that reduces the reinforcing effects of alcohol consumption through the cortical-mesolimbic system. Therefore, when a patient takes nalmefene, the satisfaction obtained when he drinks is lower, which increases the possibility to have more control over drinking.The efficacy of nalmefene was evaluated in two profiles of patients: 1. No abstinence in alcohol dependence disorder and continuous relapses, 2. Cocaine dependence disorder associated to alcohol abuse.ObjectivesImproving the quality of life and compliance rates due to the difficulties of following a strict treatment to achieve the abstinence. Furthermore, in cases of patients with cocaine dependence disorder and alcohol abuse, the objective is to avoid cocaine use by reducing previous alcohol consumption.Conclusionnalmefene offers the possibility of treating the addiction from a new perspective. Our current clinical experience has been able to treat subjects with conventional treatments failures and those who need to achieve the necessary control to reduce cocaine use.Disclosure of interestThe authors have not supplied their declaration of competing interest.

An Introduction to the Buddhist Underpinnings of Mindfulness-Based Interventions: Buddha-Nature and Intrinsic Goodness

An Introduction to the Buddhist Underpinnings of Mindfulness-Based Interventions: Buddha-Nature and Intrinsic Goodness

Prefrontal functional connectivity measured with near-infrared spectroscopy during smoking cue exposure.

Cue reactivity (CR) is an important concept for relapse in substance use disorders (SUD). Although cue exposure (CE) therapy is discussed as relapse prevention, current approaches still need improvement considering its efficacy. From a neurobiological perspective, CR is related to an over-activation in sensitized subcortical structures, their projections to motivationally relevant cortical structures (e.g. orbitofrontal cortex, OFC) and deficient prefrontal inhibitory control. Therefore, we analyzed prefrontal cortical activation and its relation to craving during smoking CE. We focused on the OFC-as a projection area of sensitized subcortical structures-due its importance in the processing of reinforcement value and the dorsolateral prefrontal cortex (dlPFC) based on its importance for behavioral inhibition. Functional near-infrared spectroscopy (fNIRS) was used to assess hemodynamics in prefrontal regions during smoking CE in 24 subjects (n = 12 occasional smokers, n = 12 controls). Subjective craving intensity (minimum craving as marker of baseline inhibition, range as marker of inhibition time course) was additionally assessed. Craving ratings indicated that CR was elicited solely in smokers, not controls. Those subjective ratings correlated with hemodynamic activity in OFC (craving range) and dlPFC (minimum craving). OFC activation was found earlier throughout the CE in smokers compared to controls. Connectivity (seed-based correlation) between OFC and dlPFC was increased in smokers. fNIRS can capture prefrontal hemodynamic activity involved in CR elicited during CE and is therefore a promising method to investigate CR and its implications for relapse prevention in SUD.

Cigarette smoking and risk of substance use and substance use disorder relapse among adults in recovery

(HAP) of many formulations. These concerns, along with regulatory–authority directives, have led to the development of opioid formulations expected to have abuse-deterrent properties. The attractiveness of opioids for abuse have been quantified using validated measures of subjective pharmacodynamic (PD) effects (e.g., drug liking, drug high), as well as select pharmacokinetic (PK) characteristics of opioids, such aspeakplasmaconcentration (Cmax) and time to achieveCmax expressed as tmax. For example, tampering with opioid formulations (e.g., altering themode of administration) may increase PD effects by increasing Cmax and/or shortening tmax. Given this PK relationship, whichmay foster a drug’s attractiveness for abuse, the Cmax/tmax ratio has been called the abuse quotient (AQ). This investigation examined the putative validity of using AQ as a surrogate clinical measure to characterize the HAP of opioid analgesic formulations. Methods: PK and PD data were retrospectively gathered from a series of randomized, double-blind, controlled clinical trials (RCTs) exploring the HAP of proposed abuse-deterrent extended-release opioid formulations in comparison with control opioid formulations with high abuse potential and, in some cases, placebo. Correlations of AQ, Cmax, and tmax with subjective PD effects influencing drug abuse were assessed within and between RCTs. Results: In all instances, there were statistically significant and high correlations of AQ and PD effects, with higher AQ denoting greater abuse potential. Overall, these associations were stronger for AQ than for Cmax or tmax individually. Conclusions: The AQ appears to be an essential parameter of HAP when developing abuse-deterrent opioid formulations. Further analyses using real-world surveillance data for comparison are recommended. Financial support: Funded internally by PRA Health Sciences, Salt Lake City, UT, USA.

Predictors of psychiatric readmission among patients with bipolar disorder at an academic safety-net hospital.

Even with treatment, approximately one-third of patients with bipolar disorder relapse into depression or mania within 1 year. Unfavorable clinical outcomes for patients with bipolar disorder include increased rates of psychiatric hospitalization and functional impairment. However, only a few studies have examined predictors of psychiatric hospital readmission in a sample of patients with bipolar disorder. The purpose of this study was to examine predictors of psychiatric readmission within 30 days, 90 days and 1 year of discharge among patients with bipolar disorder using a conceptual model adapted from Andersen's Behavioral Model of Health Service Use. In this retrospective study, univariate and multivariate logistic regression analyses were conducted in a sample of 2443 adult patients with bipolar disorder who were consecutively admitted to a public psychiatric hospital in the United States from 1 January to 31 December 2013. In the multivariate models, several enabling and need factors were significantly associated with an increased risk of readmission across all time periods examined, including being uninsured, having ⩾3 psychiatric hospitalizations and having a lower Global Assessment of Functioning score. Additional factors associated with psychiatric readmission within 30 and 90 days of discharge included patient homelessness. Patient race/ethnicity, bipolar disorder type or a current manic episode did not significantly predict readmission across all time periods examined; however, patients who were male were more likely to readmit within 1 year. The 30-day and 1-year multivariate models showed the best model fit. Our study found enabling and need factors to be the strongest predictors of psychiatric readmission, suggesting that the prevention of psychiatric readmission for patients with bipolar disorder at safety-net hospitals may be best achieved by developing and implementing innovative transitional care initiatives that address the issues of multiple psychiatric hospitalizations, housing instability, insurance coverage and functional impairment.

Polysomnographic sleep disturbances in nicotine, caffeine, alcohol, cocaine, opioid, and cannabis use: A focused review.

In the United States, approximately 60 million Americans suffer from sleep disorders and about 22 million Americans report substance dependence or use disorders annually. Sleep disturbances are common consequences of substance use disorders and are likely found in primary care as well as in specialty practices. The aim of this review was to evaluate the effects of the most frequently used substances-nicotine, alcohol, opioids, cocaine, caffeine, and cannabis-have on sleep parameters measured by polysomnography (PSG) and related clinical manifestations. We used electronic databases such as PubMED and PsycINFO to search for relevant articles. We only included studies that assessed sleep disturbances using polysomnography and reviewed the effects of these substances on six clinically relevant sleep parameters: Total sleep time, sleep onset latency, rapid-eye movement, REM latency, wake after sleep onset, and slow wave sleep. Our review indicates that these substances have significant impact on sleep and that their effects differ during intoxication, withdrawal, and chronic use. Many of the substance-induced sleep disturbances overlap with those encountered in sleep disorders, medical, and psychiatric conditions. Sleep difficulties also increase the likelihood of substance use disorder relapse, further emphasizing the need for optimizing treatment interventions in these patients. Our review highlights the importance of systematically screening for substance use in patients with sleep disturbances and highlights the need for further research to understand mechanisms underlying substances-induced sleep disturbances and on effective interventions addressing these conditions.

Individualized relapse prediction: Personality measures and striatal and insular activity during reward-processing robustly predict relapse

BackgroundNearly half of individuals with substance use disorders relapse in the year after treatment. A diagnostic tool to help clinicians make decisions regarding treatment does not exist for psychiatric conditions. Identifying individuals with high risk for relapse to substance use following abstinence has profound clinical consequences. This study aimed to develop neuroimaging as a robust tool to predict relapse. Methods68 methamphetamine-dependent adults (15 female) were recruited from 28-day inpatient treatment. During treatment, participants completed a functional MRI scan that examined brain activation during reward processing. Patients were followed 1 year later to assess abstinence. We examined brain activation during reward processing between relapsing and abstaining individuals and employed three random forest prediction models (clinical and personality measures, neuroimaging measures, a combined model) to generate predictions for each participant regarding their relapse likelihood. Results18 individuals relapsed. There were significant group by reward–size interactions for neural activation in the left insula and right striatum for rewards. Abstaining individuals showed increased activation for large, risky relative to small, safe rewards, whereas relapsing individuals failed to show differential activation between reward types. All three random forest models yielded good test characteristics such that a positive test for relapse yielded a likelihood ratio 2.63, whereas a negative test had a likelihood ratio of 0.48. ConclusionsThese findings suggest that neuroimaging can be developed in combination with other measures as an instrument to predict relapse, advancing tools providers can use to make decisions about individualized treatment of substance use disorders.