March 18, 2022

Substance use disorders: a comprehensive update of classification, epidemiology, neurobiology, clinical aspects, treatment and prevention

by Francesco Montagnino in Sober living0 Comments

It also has antidepressant properties via these same mechanisms, which might facilitate smoking cessation. A particularly dangerous complication in the course of a SUD is overdose, which, if not treated in a timely manner, can result in death. Although opioids are responsible for the most overdose deaths, there is increased recognition of the involvement of other drugs, including alcohol, and of drug combinations. Comorbidities between psychiatric disorders and SUDs are also relevant to prevention efforts. Specifically, because psychiatric disorders increase the vulnerability for SUDs, their early diagnosis and treatment could help prevent SUDs.

Interoceptive inputs influence the shift from goal‐directed, flexible behaviors toward compulsive, reflexive ones. Dysphoria and anhedonia during the withdrawal stage, alongside exposure to drug cues, can trigger the activation of the network, which initiates the craving stage in the cycle. Craving engages the ventral prefrontal cortex and the ventral anterior cingulate cortex, sparking the drive to seek the drug that culminates in intoxication and compulsive consumption.

Other life-changing complications

Nevertheless, consultation with or supervision by colleagues with greater experience in treating these individuals may help clinicians whose knowledge of this population is limited. Substance use and SUDs increase the risk of HIV and HCV infections, accounting for approximately 10% of the former305 and 38‐79% of the latter306 globally. Injection of drugs also increases risk of bacterial endocarditis, cellulitis, and abscesses and embolisms of the heart, brain and spleen, among other infections307. Additionally, intoxication with drugs or alcohol increases high‐risk behaviors, such as engaging in unprotected sex and failing to follow preventive practices308. Substance use and SUDs can also negatively affect adherence to medications for HIV and HCV infections309.

This form of treatment can be done at a doctor’s office or via telehealth appointment. Evidence-based guidelines can assist doctors with choosing the right treatment options. These guidelines help evaluate a patient’s clinical needs and situation to match them with the right level of care, in the most appropriate available setting. For more information on evidence-based guidelines visit Addiction Medicine Primer. Overcoming an SUD is not as simple as resisting the temptation to take drugs. Recovery may involve medication to help with cravings and withdrawal as well as different forms of therapy.

The US Preventive Services Task Force considers the evidence insufficient for other substances247. These interventions are generally intended for settings in which the main purpose of the visit is not substance use, such as visits to primary care or the emergency department248. Disulfiram is an inhibitor of aldehyde dehydrogenase, which metabolizes the alcohol metabolite acetaldehyde, thereby increasing its concentration in plasma. Acetaldehyde accumulation triggers nausea, vomiting, sweating, flushing and palpitations, so that individuals treated with disulfiram stop drinking to avoid the aversive response195. Disulfiram reduced alcohol consumption in open‐label but not in blinded RCTs, suggesting that awareness of potential negative effects improved the placebo outcomes. The efficacy of the medication is limited by poor adherence, and supervised treatment results in better success rates than non‐supervised one196.

Clinical trials

Despite manufacturer claims, these are chemical compounds rather than “natural” or harmless products. These drugs can produce a “high” similar to marijuana and have become a popular but dangerous alternative. Signs and symptoms of drug use or intoxication may vary, depending on the type of drug. Manuals for the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) and the ASSIST-linked brief interventionsThe ASSIST package, which… Choose where we’ll send you resources to support your health and financial well-being.

  • Screening for substances in blood, urine or saliva can be useful to detect current use and to help monitor progress.
  • Substance use disorder (SUD), formerly known as drug addiction, is a mental health condition where you experience a problematic pattern of substance use that affects your health and quality of life.
  • It further depends on funds, clinical infrastructure, and severity of cases treated.
  • CBT4CBT helps users to identify patterns of substance use and develop coping skills using video and other multimedia content.

The dopamine shift from reward to stimuli that predict the reward is referred to as conditioning, and drug‐predictive stimuli (objects, environments, routines or emotions) are referred to as drug cues. Conditioning, driven by stimulation of D1 receptors in the nucleus accumbens, explains the addictive potential of drugs47, 48. Once the experience from drug reward has been turned into a conditioned memory, the cues by themselves drive the desire for the drug and energize the dopamine motivational circuit that propels the behaviors to pursue it33. With repeated drug use, the number of stimuli that become linked (conditioned) to the drug expands, increasing the likelihood of encountering a drug‐predictive cue. Once consumed, the drug’s dopamine‐stimulating pharmacological effects further strengthen conditioning, and this perpetuates the cycle of drug‐taking33.

  • Participating in self-help programs, like Narcotics Anonymous, can also play a significant role in SUD treatment.
  • Supplementing the patch with a rapid‐acting nicotine replacement treatment as needed, when cravings emerge, appears to improve cessation rates175.
  • Treatment with naloxone – an opioid antagonist that can be administered intramuscularly, subcutaneously, intravenously or intranasally – is the most important short‐term intervention to reverse overdoses.
  • Non‐invasive techniques include transcranial magnetic stimulation, transcranial direct current stimulation, and low‐intensity focused ultrasound214 targeting the dorsolateral prefrontal cortex and the insula73.

RISK FACTORS

Several types of treatment settings, including inpatient and outpatient settings, as well as short-term care and long-term therapeutic communities, are available. According to the American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders (DSM-5), a person must have at least two signs in the symptoms section over 12 months to be diagnosed with substance use disorder. A provider will also ask about your mental health history, as it’s common to have an SUD and a mental health condition. One of the more common and most deadly complications of substance use disorder is overdose.

Medications for opioid use disorder

Furthermore, recognizing SUDs in elderly patients can be challenging, because clinical indicators (e.g., unsteady gait, cognitive impairment, insomnia) may reflect other common physical or psychiatric problems in this population. Monitoring the Future, a yearly national survey of middle‐ and high‐school students in the US, estimates that by the time adolescents finish high school, close to 60% have used alcohol and 50% have tried an illicit drug314. Vaping devices can deliver nicotine, cannabinoids or other products, and are often supplied with flavors and packaging that are appealing to youth. As already noted, it is not only distribution of sterile injecting equipment that confers positive effects to these programs.

Modifiable risk factors, such as co‐occurring disorders, should be addressed. Patients should be periodically re‐evaluated to assess potential changes in their opioid treatment regimen. Clinicians should also be aware of unintended consequences of tapering opioids – including acute opioid withdrawal, uncontrolled pain, and even suicide – and balance the risks and benefits of continued opioid use303. If tapering is not appropriate, an alternative is to use opioids that treat both chronic pain and opioid use disorder, such as buprenorphine and methadone.

Considering Online Therapy?

For certain drug types, some symptoms are less prominent, and in some cases, not all symptoms apply. drug addiction substance use disorder diagnosis and treatment Pre‐exposure prophylaxis refers to the practice of taking tenofovir (a nucleotide reverse transcriptase inhibitor) daily to decrease the risk of HIV infection. Although it can reduce risk by close to 80%, this prophylaxis has had limited uptake, probably due to its cost, the need for housing stability and access to a regular prescriber, and the difficulty of adhering to a daily medication regimen311.

A 2022 meta‐analysis found an association of weekly cannabis use (vs. no use) with a 35% increase in risk of developing psychosis; it also found an association of daily or near‐daily use with a 76% increase in that risk. By contrast, there was no significant increase in risk among individuals with monthly and yearly use103. The executive control network underlies various cognitive processes, including decision‐making and self‐regulation.

Help from your health care provider, family, friends, support groups or an organized treatment program can help you overcome your drug addiction and stay drug-free. The chronic nature of addiction means that for some people relapse, or a return to drug use after an attempt to stop, can be part of the process, but newer treatments are designed to help with relapse prevention. Relapse rates for drug use are similar to rates for other chronic medical illnesses. If people stop following their medical treatment plan, they are likely to relapse. These guidelines contain recommendations on the identification and management of substance use and substance use disorders for health care services which…

About

Francesco Montagnino

{"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}
>