CARN key terms

A framework describing behavior change as movement through stages: precontemplation, contemplation, preparation, action, maintenance, and sometimes termination. Interventions are matched to a person's current stage rather than applied uniformly.

The change stage in which a person recognizes a problem exists and is weighing pros and cons of acting but has not committed to change. Ambivalence is the defining feature, and the clinician's task is to tip the balance without pressure.

A collaborative, person-centered counseling style that elicits and strengthens a person's own reasons for change. It uses open questions, affirmation, reflective listening, and summarizing while avoiding confrontation and unsolicited advice.

Client statements favoring movement toward a target behavior, such as desires, abilities, reasons, and needs for change. Clinicians deliberately evoke and reflect change talk because it predicts subsequent behavior change.

Client speech arguing against change or favoring the status quo. It is treated as a normal part of ambivalence rather than resistance to be argued down; confronting it typically strengthens it.

A cognitive-behavioral approach treating lapse as a foreseeable event rather than a moral failure. It builds coping skills for high-risk situations and targets the abstinence violation effect, in which shame after a slip escalates into full relapse.

The spiral of guilt, self-blame, and giving up that can follow a single use after a period of abstinence. Reframing a lapse as a learning opportunity is a core relapse prevention strategy for interrupting this pattern.

A single episode of substance use after a period of abstinence or reduced use, distinct from a full return to prior patterns. How a lapse is interpreted and managed strongly influences whether it progresses.

Any internal or external circumstance that raises the likelihood of substance use, such as negative emotion, social pressure, conflict, or celebration. Identifying these in advance allows rehearsal of specific coping responses.

A behavioral intervention that provides tangible, verifiable rewards for objectively confirmed abstinence or treatment attendance. It is among the most effective psychosocial treatments for stimulant use disorder when implemented with fidelity.

A circuit running from the ventral tegmental area to the nucleus accumbens that mediates reward and reinforcement. Most addictive drugs increase dopamine signaling here, though the magnitude and mechanism vary by drug class.

A reduced response to a given dose of a substance after repeated exposure, so that more is needed to achieve the same effect. It develops at different rates for different effects, which contributes to overdose risk.

An adapted physiological state in which abrupt cessation or dose reduction produces withdrawal signs. It can occur with prescribed medications such as opioids or benzodiazepines and is not synonymous with addiction.

A substance-specific cluster of symptoms that emerges when use is reduced or stopped after sustained heavy use. Severity ranges from discomfort to life-threatening complications, as with alcohol and benzodiazepine withdrawal.

A severe alcohol withdrawal syndrome marked by confusion, disorientation, marked autonomic hyperactivity, and hallucinations, typically beginning two to four days after the last drink. It is a medical emergency with substantial mortality if untreated.

A ten-item clinician-rated scale quantifying alcohol withdrawal severity to guide symptom-triggered dosing of benzodiazepines. Scores inform whether and how much medication to give rather than fixed tapering schedules alone.

A class of central nervous system depressants that enhance GABA-A receptor activity, used as first-line treatment for alcohol withdrawal and for anxiety disorders. Cross-tolerance with alcohol underlies their role in withdrawal management.

Treatment that substitutes a longer-acting medication with similar receptor action for the drug of misuse, reducing craving and withdrawal without producing the same harms. Examples include methadone for opioids and nicotine replacement for tobacco.

A medication that activates a receptor but produces less than the maximal effect of a full agonist, with a ceiling on its effects. Buprenorphine is the key example, giving opioid substitution with a lower risk of respiratory depression.

A partial opioid agonist used to treat opioid use disorder, often combined with naloxone to deter injection misuse. Its ceiling effect improves safety, and it can precipitate withdrawal if given while full agonists are still present.

A short-acting opioid antagonist that rapidly reverses opioid-induced respiratory depression. It has no agonist activity, so it precipitates withdrawal in dependent persons, and repeat dosing may be needed because its duration is shorter than many opioids.

Life-threatening opioid toxicity characterized by pinpoint pupils, depressed consciousness, and slowed or absent breathing. Immediate response is rescue breathing and naloxone administration, followed by emergency medical evaluation.

A pragmatic public health approach that aims to reduce the negative consequences of substance use without requiring abstinence as a precondition for help. Examples include naloxone distribution, sterile syringe access, and fentanyl test strips.

A community service providing sterile injection equipment, safe disposal, and referrals to treatment and health care. Evidence supports reduced needle sharing and increased treatment entry without increasing injection drug use in the community.

A public health model using validated short screens in general settings, followed by a brief motivational conversation for those at risk and referral to specialty care when indicated. It targets unhealthy use before severe disorder develops.

A ten-item World Health Organization screening questionnaire for hazardous and harmful alcohol use. It covers consumption, dependence symptoms, and alcohol-related problems, and scores guide the intensity of brief intervention.

A diagnostic category requiring at least two of eleven criteria within a twelve-month period, spanning impaired control, social impairment, risky use, and pharmacological indicators. Severity is graded as mild, moderate, or severe by the number of criteria met.

The presence of both a substance use disorder and one or more mental health conditions in the same person. Integrated treatment addressing both simultaneously generally outperforms sequential or parallel care.

An organizational and clinical approach that recognizes the prevalence of trauma and avoids practices that may retraumatize. It emphasizes safety, trustworthiness, choice, collaboration, and empowerment across all services.

The collaborative working relationship between clinician and client, comprising agreed goals, agreed tasks, and an emotional bond. It is one of the most consistent predictors of treatment engagement and outcome across modalities.

A framework for matching patients to levels of care based on six dimensions, including withdrawal risk, biomedical conditions, and recovery environment. It supports individualized placement and continuing reassessment rather than fixed program lengths.

Ongoing treatment and support after an initial intensive episode, such as outpatient groups, recovery coaching, or mutual-help participation. Longer engagement with continuing care is associated with better sustained outcomes.

A peer-led, usually voluntary fellowship such as Alcoholics Anonymous, SMART Recovery, or Narcotics Anonymous, offering social support and a structured program for recovery. Referral should account for the person's preferences and beliefs.

The total resources a person can draw on to sustain recovery, including social, physical, human, and cultural assets such as housing, employment, relationships, and coping skills. Building it is a central aim of recovery-oriented systems of care.

Structured teaching and rehearsal of behavioral and cognitive strategies for managing cravings, stress, and high-risk situations. It is a core component of cognitive-behavioral relapse prevention and is often delivered in group format.

Community Reinforcement and Family Training, an intervention teaching concerned family members to change their own behavior to reduce a loved one's substance use and increase treatment entry. It emphasizes positive reinforcement and nonconfrontational communication.

A contested label describing patterns in which a family member's behavior becomes organized around controlling or rescuing a person who uses substances. Clinicians should use it cautiously, as it can assign blame rather than describe observable behavior.

A perspective treating the family as an interacting whole in which changes in one member affect all others. It holds that substance use both shapes and is shaped by family roles, communication, and boundaries.

The ethical and legal duty to protect client information from unauthorized disclosure. In substance use treatment it is governed by federal regulations that are generally stricter than general health privacy rules and require specific written consent for most disclosures.

A legal obligation, recognized in many jurisdictions, to take reasonable steps to protect an identifiable person from a client's serious threatened harm. It can justify limited disclosure despite otherwise strict confidentiality protections.

A client's voluntary agreement to a proposed treatment or disclosure after receiving adequate information about its nature, risks, benefits, and alternatives. It requires decision-making capacity and can be withdrawn at any time.