Certified Alcohol and Drug Counselor CADC Exam 2026
Latest Comprehensive Study Guide with Practice Questions
Addiction Counseling Review, Detailed Rationales, Verified
Answers, Success Workbook
SECTION 1: SCIENTIFIC PRINCIPLES OF SUBSTANCE USE AND CO-
OCCURRING DISORDERS (Questions 1-25)
1. A client presents with severe tremors, diaphoresis, tachycardia, and visual
hallucinations approximately 48 hours after their last alcoholic beverage. This
clinical presentation is MOST consistent with:
A) Alcohol intoxication
B) Alcohol withdrawal delirium (Delirium Tremens)
C) Wernicke-Korsakoff syndrome
D) Alcohol-induced psychotic disorder
Rationale: The correct answer is B) Alcohol withdrawal delirium (Delirium
Tremens) . Delirium tremens typically occurs 48-72 hours after the last drink and
is characterized by severe autonomic hyperactivity (tremors, diaphoresis,
tachycardia), hallucinations, and altered mental status. This is a medical emergency
requiring immediate intervention.
2. A counselor is explaining the disease model of addiction to a client's family.
According to this model, addiction is BEST understood as:
A) A moral failing resulting from poor character
B) A chronic, relapsing brain disease characterized by compulsive substance
use despite harmful consequences
C) A learned behavior that can be unlearned through conditioning
D) A temporary condition that resolves with willpower alone
Rationale: The correct answer is B) A chronic, relapsing brain disease
characterized by compulsive substance use despite harmful consequences. The
disease model, supported by organizations like ASAM and NIAAA, conceptualizes
addiction as a chronic brain disorder that affects reward, motivation, and memory
,systems. This understanding helps reduce stigma and supports a medical treatment
approach.
3. A client reports that they need to use increasingly larger amounts of heroin
to achieve the same effect they previously experienced with a smaller dose.
This phenomenon is BEST described as:
A) Withdrawal
B) Tolerance
C) Sensitization
D) Cross-dependence
Rationale: The correct answer is B) Tolerance. Tolerance is the need for
increased amounts of a substance to achieve the desired effect, or a diminished
effect with continued use of the same amount. This is a hallmark of physiological
dependence and is a key criterion for substance use disorder diagnosis.
4. A client with a history of opioid use disorder is experiencing runny nose,
watery eyes, yawning, muscle aches, and gastrointestinal distress
approximately 12 hours after their last dose. These symptoms are
characteristic of:
A) Opioid intoxication
B) Opioid withdrawal
C) Opioid overdose
D) Opioid-induced psychotic disorder
Rationale: The correct answer is B) Opioid withdrawal. Opioid withdrawal
symptoms typically begin within 6-12 hours after the last dose and include
lacrimation, rhinorrhea, yawning, sweating, muscle aches, nausea, vomiting, and
diarrhea. The severity peaks at 48-72 hours.
5. A client who uses alcohol heavily reports experiencing blackouts. Blackouts
are BEST described as:
A) Loss of consciousness due to alcohol poisoning
B) Episodes of amnesia during which the individual engages in activities but
,later has no memory of them
C) Seizures resulting from alcohol withdrawal
D) Hallucinations during alcohol intoxication
Rationale: The correct answer is B) Episodes of amnesia during which the
individual engages in activities but later has no memory of them. Alcohol-
induced blackouts are periods of anterograde amnesia where the individual appears
conscious and may engage in complex behaviors but later has no recall of the
events. This occurs due to alcohol's effect on the hippocampus.
6. According to the biopsychosocial model of addiction, which of the following
is considered a biological risk factor for developing a substance use disorder?
A) Peer pressure and social norms
B) Family history of substance use disorders
C) Low self-esteem
D) Unemployment
Rationale: The correct answer is B) Family history of substance use disorders.
Biological risk factors include genetic predisposition, family history, and
neurobiological factors. Family history of substance use disorders significantly
increases an individual's risk due to both genetic and environmental influences.
7. A client diagnosed with alcohol use disorder is also experiencing symptoms
of depression. The counselor should recognize that:
A) Depression must be treated before addressing alcohol use
B) Co-occurring disorders are common and require integrated treatment
C) The depression is likely caused by the alcohol use and will resolve with
abstinence
D) Antidepressant medication is contraindicated in individuals with alcohol use
disorder
Rationale: The correct answer is B) Co-occurring disorders are common and
require integrated treatment. Co-occurring mental health and substance use
disorders are highly prevalent. Integrated treatment that addresses both conditions
simultaneously is the evidence-based standard of care, as treating one without the
other often leads to poor outcomes.
, 8. A client reports using benzodiazepines recreationally. The counselor should
be aware that benzodiazepine withdrawal:
A) Is not dangerous and can be managed with willpower
B) Can be life-threatening and requires medical supervision
C) Only occurs after years of use
D) Is less severe than alcohol withdrawal
Rationale: The correct answer is B) Can be life-threatening and requires
medical supervision. Benzodiazepine withdrawal can be severe and potentially
life-threatening, with complications including seizures and delirium. Medical
detoxification with gradual tapering is essential for safety.
9. A client with a substance use disorder reports that they have tried to quit
multiple times but always return to use. According to the stages of change
model (Prochaska & DiClemente), this client is MOST likely in which stage?
A) Precontemplation
B) Contemplation
C) Preparation
D) Maintenance (with relapse)
Rationale: The correct answer is D) Maintenance (with relapse) . In the stages of
change model, individuals in the maintenance stage have sustained change for
more than six months. However, relapse is common and does not mean failure—it
indicates a return to an earlier stage and an opportunity to re-engage in the change
process.
10. Which of the following substances is associated with the MOST severe and
potentially fatal withdrawal syndrome?
A) Cocaine
B) Marijuana
C) Alcohol
D) Hallucinogens
Latest Comprehensive Study Guide with Practice Questions
Addiction Counseling Review, Detailed Rationales, Verified
Answers, Success Workbook
SECTION 1: SCIENTIFIC PRINCIPLES OF SUBSTANCE USE AND CO-
OCCURRING DISORDERS (Questions 1-25)
1. A client presents with severe tremors, diaphoresis, tachycardia, and visual
hallucinations approximately 48 hours after their last alcoholic beverage. This
clinical presentation is MOST consistent with:
A) Alcohol intoxication
B) Alcohol withdrawal delirium (Delirium Tremens)
C) Wernicke-Korsakoff syndrome
D) Alcohol-induced psychotic disorder
Rationale: The correct answer is B) Alcohol withdrawal delirium (Delirium
Tremens) . Delirium tremens typically occurs 48-72 hours after the last drink and
is characterized by severe autonomic hyperactivity (tremors, diaphoresis,
tachycardia), hallucinations, and altered mental status. This is a medical emergency
requiring immediate intervention.
2. A counselor is explaining the disease model of addiction to a client's family.
According to this model, addiction is BEST understood as:
A) A moral failing resulting from poor character
B) A chronic, relapsing brain disease characterized by compulsive substance
use despite harmful consequences
C) A learned behavior that can be unlearned through conditioning
D) A temporary condition that resolves with willpower alone
Rationale: The correct answer is B) A chronic, relapsing brain disease
characterized by compulsive substance use despite harmful consequences. The
disease model, supported by organizations like ASAM and NIAAA, conceptualizes
addiction as a chronic brain disorder that affects reward, motivation, and memory
,systems. This understanding helps reduce stigma and supports a medical treatment
approach.
3. A client reports that they need to use increasingly larger amounts of heroin
to achieve the same effect they previously experienced with a smaller dose.
This phenomenon is BEST described as:
A) Withdrawal
B) Tolerance
C) Sensitization
D) Cross-dependence
Rationale: The correct answer is B) Tolerance. Tolerance is the need for
increased amounts of a substance to achieve the desired effect, or a diminished
effect with continued use of the same amount. This is a hallmark of physiological
dependence and is a key criterion for substance use disorder diagnosis.
4. A client with a history of opioid use disorder is experiencing runny nose,
watery eyes, yawning, muscle aches, and gastrointestinal distress
approximately 12 hours after their last dose. These symptoms are
characteristic of:
A) Opioid intoxication
B) Opioid withdrawal
C) Opioid overdose
D) Opioid-induced psychotic disorder
Rationale: The correct answer is B) Opioid withdrawal. Opioid withdrawal
symptoms typically begin within 6-12 hours after the last dose and include
lacrimation, rhinorrhea, yawning, sweating, muscle aches, nausea, vomiting, and
diarrhea. The severity peaks at 48-72 hours.
5. A client who uses alcohol heavily reports experiencing blackouts. Blackouts
are BEST described as:
A) Loss of consciousness due to alcohol poisoning
B) Episodes of amnesia during which the individual engages in activities but
,later has no memory of them
C) Seizures resulting from alcohol withdrawal
D) Hallucinations during alcohol intoxication
Rationale: The correct answer is B) Episodes of amnesia during which the
individual engages in activities but later has no memory of them. Alcohol-
induced blackouts are periods of anterograde amnesia where the individual appears
conscious and may engage in complex behaviors but later has no recall of the
events. This occurs due to alcohol's effect on the hippocampus.
6. According to the biopsychosocial model of addiction, which of the following
is considered a biological risk factor for developing a substance use disorder?
A) Peer pressure and social norms
B) Family history of substance use disorders
C) Low self-esteem
D) Unemployment
Rationale: The correct answer is B) Family history of substance use disorders.
Biological risk factors include genetic predisposition, family history, and
neurobiological factors. Family history of substance use disorders significantly
increases an individual's risk due to both genetic and environmental influences.
7. A client diagnosed with alcohol use disorder is also experiencing symptoms
of depression. The counselor should recognize that:
A) Depression must be treated before addressing alcohol use
B) Co-occurring disorders are common and require integrated treatment
C) The depression is likely caused by the alcohol use and will resolve with
abstinence
D) Antidepressant medication is contraindicated in individuals with alcohol use
disorder
Rationale: The correct answer is B) Co-occurring disorders are common and
require integrated treatment. Co-occurring mental health and substance use
disorders are highly prevalent. Integrated treatment that addresses both conditions
simultaneously is the evidence-based standard of care, as treating one without the
other often leads to poor outcomes.
, 8. A client reports using benzodiazepines recreationally. The counselor should
be aware that benzodiazepine withdrawal:
A) Is not dangerous and can be managed with willpower
B) Can be life-threatening and requires medical supervision
C) Only occurs after years of use
D) Is less severe than alcohol withdrawal
Rationale: The correct answer is B) Can be life-threatening and requires
medical supervision. Benzodiazepine withdrawal can be severe and potentially
life-threatening, with complications including seizures and delirium. Medical
detoxification with gradual tapering is essential for safety.
9. A client with a substance use disorder reports that they have tried to quit
multiple times but always return to use. According to the stages of change
model (Prochaska & DiClemente), this client is MOST likely in which stage?
A) Precontemplation
B) Contemplation
C) Preparation
D) Maintenance (with relapse)
Rationale: The correct answer is D) Maintenance (with relapse) . In the stages of
change model, individuals in the maintenance stage have sustained change for
more than six months. However, relapse is common and does not mean failure—it
indicates a return to an earlier stage and an opportunity to re-engage in the change
process.
10. Which of the following substances is associated with the MOST severe and
potentially fatal withdrawal syndrome?
A) Cocaine
B) Marijuana
C) Alcohol
D) Hallucinogens
