Substance Use Disorders Practice Questions

Q: Key symptom in alcohol withdrawal syndrome is:

Tremors. ***Tremors*** - Tremors are one of the **earliest and most common symptoms** of alcohol withdrawal, often appearing within 6-12 hours after the last drink. - They are a classic manifestation of **autonomic hyperactivity** due to the sudden cessation of chronic alcohol's depressant effects. *Sleep disturbance* - While **insomnia and disturbed sleep** are very common in alcohol withdrawal, they are generally less specific and often accompany other symptoms. - Sleep disturbances are a consequence of the overall nervous system dysregulation, not typically the single "key" defining symptom in isolation. *Visual hallucinations* - **Visual hallucinations** can occur in alcohol withdrawal, particularly in more severe forms like **alcoholic hallucinosis**, often appearing 12-24 hours after cessation. - However, they are not as ubiquitous or as early-onset as tremors, making tremors a more fundamental "key" symptom. *Delirium* - **Delirium (Delirium Tremens)** is the most severe and life-threatening form of alcohol withdrawal, characterized by confusion, disorientation, agitation, and profound autonomic instability. - It usually develops later (48-96 hours after cessation) and is an extreme manifestation, whereas tremors are a more universal and initial sign across milder to severe withdrawal.

Q: All the following drugs are used to prevent relapse and maintain abstinence in cases of alcohol use disorder except?

Propranolol. ***Propranolol*** - **Propranolol** is a **beta-blocker** primarily used to treat conditions like hypertension, angina, and anxiety. - While it can help manage some **symptoms associated with alcohol withdrawal**, such as tremors and tachycardia, it is **not indicated or effective for preventing relapse or maintaining abstinence** from alcohol use disorder. *Disulfiram* - **Disulfiram** works by inhibiting **acetaldehyde dehydrogenase**, leading to an unpleasant accumulation of acetaldehyde if alcohol is consumed. - This adverse reaction serves as a **deterrent** to drinking alcohol, helping to prevent relapse [1], [2]. *Acamprosate* - **Acamprosate** is believed to restore the balance between **excitatory (glutamate)** and **inhibitory (GABA)** neurotransmission in the brain, which is often disrupted in alcohol dependence. - It helps reduce cravings and the **negative reinforcement** associated with protracted withdrawal, aiding in the maintenance of abstinence [1]. *Naltrexone* - **Naltrexone** is an **opioid receptor antagonist** that works by blocking the euphoric and pleasurable effects of alcohol [1]. - By reducing the **rewarding effects of alcohol**, it helps decrease cravings and subsequently the risk of relapse [1].

Q: Which substance is most commonly associated with experiencing a 'bad trip'?

LSD. ***LSD*** - **Lysergic acid diethylamide (LSD)** is a potent **hallucinogen** known for causing profound alterations in perception, mood, and cognitive processes. - The subjective experience can be highly dose-dependent and influenced by the user's mindset and environment (**set and setting**), making **"bad trips"** with intense anxiety, paranoia, and terrifying hallucinations relatively common. *Cocaine* - **Cocaine** is a **stimulant** that primarily causes euphoria, increased energy, and alertness, but can lead to anxiety, paranoia, and psychosis at high doses or with chronic use. - While unpleasant psychological effects can occur, they are generally not categorized as a "bad trip" in the same hallucinatory sense as with LSD. *Cannabis* - **Cannabis** can induce feelings of relaxation and altered perception, but in some individuals, especially with high doses or edibles, it can trigger **anxiety**, **paranoia**, and occasionally **acute psychosis**. - Although these experiences can be very distressing, they typically lack the profound dissociative and hallucinatory intensity associated with an LSD "bad trip." *Heroin* - **Heroin** is an **opioid** that primarily produces euphoria, pain relief, and sedation. - Its main risks include **respiratory depression**, overdose, and withdrawal symptoms, rather than the perceptual and psychological disturbances characterized as a "bad trip."

Q: What is the most common illicit drug that causes dependence?

Cannabis. ***Cannabis*** - **Cannabis** is the most widely used illicit drug globally, and despite common misconceptions, it can certainly lead to **cannabis use disorder** characterized by dependence. - The high prevalence of its use contributes to it being the illicit drug that most commonly causes clinical dependence, as a larger user base means more individuals will develop problematic use patterns. *Cocaine* - While cocaine is known for its **highly addictive potential** and rapid development of dependence, its overall prevalence of use is lower than cannabis. - The intense psychological dependence associated with cocaine can lead to severe withdrawal symptoms and compulsive drug-seeking behavior. *Heroin* - **Heroin**, an opioid, is highly addictive, causing both **physical and psychological dependence** very quickly due to its potent effects on the brain's reward system. - However, its illicit use is less widespread compared to cannabis, making it responsible for fewer overall cases of dependence. *Amphetamine* - **Amphetamines** also have a high potential for **psychological dependence**, leading to compulsive use and significant withdrawal symptoms upon cessation. - Like cocaine and heroin, the overall number of people who use amphetamines illicitly is significantly lower than those who use cannabis.

Q: A 55-year-old chronic alcoholic male, presented with irrelevant talks, tremor and sweating. He had his last drink 3 days back. What is the probable diagnosis?

Delirium tremens. ***Delirium tremens*** - The presentation of **irrelevant talks**, **tremor**, and **sweating** in a chronic alcoholic who stopped drinking 3 days prior is highly characteristic of **delirium tremens**. - **Delirium tremens** is a severe form of acute **alcohol withdrawal**, typically occurring 2-4 days after the last drink, and involves extreme agitation, disorientation, hallucinations, and autonomic hyperactivity. *Korsakoff psychosis* - **Korsakoff psychosis** is a chronic neuropsychiatric syndrome associated with **thiamine deficiency**, often seen in chronic alcoholics. - It primarily presents with severe **anterograde and retrograde amnesia**, **confabulation**, and **apathy**, rather than acute, fluctuating consciousness and autonomic instability seen in delirium tremens. *Post-Acute withdrawal syndrome* - **Post-Acute Withdrawal Syndrome (PAWS)** involves persistent, milder symptoms that can last weeks or months after acute withdrawal. - Symptoms are generally less severe and acute than described, often including mood swings, anxiety, sleep disturbances, and cognitive impairment, not the acute delirium and autonomic overactivity presented. *Discontinuation syndrome* - **Discontinuation syndrome** refers to a cluster of symptoms that can occur after stopping or reducing certain medications, particularly antidepressants. - It is not directly related to alcohol withdrawal and typically presents with symptoms like dizziness, nausea, sensory disturbances, and flu-like symptoms.

Q: The site of lesion in Korsakoff's psychosis is

Mammillary body. ***Mammillary body*** - **Korsakoff's psychosis** is a neurocognitive disorder characterized by severe **memory impairment**, confabulation, and apathy, primarily due to **thiamine deficiency**. - The disease involves damage to several brain areas, most notably the **mammillary bodies** and the dorsal medial nucleus of the thalamus, which are critical for memory formation. *Frontal lobe* - While frontal lobe dysfunction can lead to cognitive deficits, the **primary lesion** in Korsakoff's psychosis is not typically located here. - Damage to the frontal lobe is more commonly associated with executive dysfunction, personality changes, and disinhibition, rather than the profound amnesia seen in Korsakoff's. *Cingulate gyrus* - The cingulate gyrus plays a role in emotion, learning, and memory, but it is **not considered the primary site of lesion** in Korsakoff's psychosis. - Although it can be affected, lesions in the mammillary bodies are more directly linked to the characteristic memory deficits. *Corpus striatum* - The corpus striatum is involved in motor control and habit formation, and its damage is associated with movement disorders like **Parkinson's or Huntington's disease**. - This area is **not the primary site of pathology** in Korsakoff's psychosis, which is fundamentally a memory disorder.

Q: Which of the following is NOT a diagnostic criterion for drug dependence?

Early completion of tasks. ***Early completion of tasks*** - This is not a recognized diagnostic criterion for **drug dependence (substance use disorder)** according to standardized diagnostic manuals like the DSM-5. - While it might reflect an individual's productivity or efficiency, it has no direct link to the compulsive drug-seeking and use behaviors characteristic of dependence. *Tolerance* - **Tolerance** is a core criterion, defined as a need for markedly increased amounts of the substance to achieve intoxication or desired effect, or a markedly diminished effect with continued use of the same amount of the substance. - This indicates a physiological adaptation to the presence of the drug. *Withdrawal symptoms* - **Withdrawal symptoms** refer to the characteristic physiological and psychological symptoms that occur when a person stops or reduces their use of a substance after prolonged or heavy use. - The presence of a withdrawal syndrome or taking the substance (or a closely related one) to relieve or avoid withdrawal symptoms is a key diagnostic indicator. *Taking substance in larger amounts than intended* - This criterion reflects the **impaired control** over substance use, where the individual uses the substance more often or in larger quantities than they initially intended. - It demonstrates a loss of conscious regulation over drug intake, which is a hallmark of substance dependence.

Q: A patient has been a known alcoholic for the last 20 years. He suddenly develops restlessness, tremors, and agitation. What is the most likely diagnosis?

Delirium tremens. ***Delirium tremens*** - This condition is characterized by **restless tremors**, **agitation**, and often hallucinations, occurring in chronic alcoholics after sudden cessation or reduction of alcohol intake. - The symptoms typically appear **48-96 hours** after the last drink and can include severe autonomic hyperactivity such as tachycardia, hypertension, and hyperthermia. *Alcoholic hallucinosis* - This involves vivid auditory, visual, or tactile hallucinations that occur in a **clear sensorium**, typically 12-48 hours after decreased alcohol intake. - Unlike delirium tremens, there is usually **no significant disorientation** or severe autonomic instability. *Wernicke's encephalopathy* - This is an acute neurological condition due to **thiamine deficiency**, common in chronic alcoholics, presenting with the classical triad of **ocular disturbances** (nystagmus, ophthalmoplegia), **ataxia**, and **confusion**. - While confusion can be present, the primary symptoms described (restless tremors, agitation) are not the hallmark features. *Korsakoff's syndrome* - This is a chronic neuropsychiatric disorder that often follows untreated Wernicke's encephalopathy, characterized by **severe memory impairment** (anterograde and retrograde amnesia) and **confabulation**. - It primarily affects memory and learning, rather than acute agitation and tremors.

Q: Which of the following is NOT a feature of Korsakoff syndrome?

Ataxia. ***Ataxia*** - While **ataxia** is a cardinal feature of **Wernicke encephalopathy** (part of the classic triad: confusion, ataxia, ophthalmoplegia), it is **not a primary defining feature** of **Korsakoff syndrome**. - Korsakoff syndrome is primarily characterized by **severe memory deficits** and **confabulation**. - Although ataxia may persist as a residual sign in some patients with Wernicke-Korsakoff syndrome, it is not considered a core diagnostic criterion for Korsakoff syndrome itself. - Among the given options, ataxia is the feature most appropriately classified as "NOT a feature" of Korsakoff syndrome in the classical sense. *Antegrade amnesia* - This is the **primary and most prominent feature** of Korsakoff syndrome, referring to the **severe inability to form new memories** after the onset of the condition. - Patients cannot retain information for more than a few seconds to minutes. - This profound deficit in new learning is the hallmark of the syndrome. *Retrograde amnesia* - This is also a **key feature**, indicating **impaired recall of memories** from before the onset of the condition. - Typically follows a temporal gradient, with recent memories more affected than remote ones. - The extent varies but can span several years prior to onset. *Confabulation* - This is a **highly characteristic symptom** of Korsakoff syndrome, where patients **unconsciously fabricate memories** to fill gaps in their recall. - These fabricated stories are not intentional lies but rather the brain's attempt to make sense of missing information. - Confabulations are often delivered with conviction but are inconsistent when the patient is asked again later.

Q: Which of the following is NOT a symptom of nicotine withdrawal?

Increased heart rate. ***Increased heart rate*** - **Increased heart rate** is NOT a symptom of nicotine withdrawal; rather, it is associated with **active nicotine use** due to nicotine's stimulant effects on the sympathetic nervous system. - During **nicotine withdrawal**, the heart rate typically **decreases or normalizes** as the body adjusts to the absence of nicotine's cardiovascular stimulation. - Nicotine acts as a sympathomimetic agent, causing tachycardia during use, but withdrawal does not produce increased heart rate. *Anxiety* - **Anxiety** is one of the most common and prominent symptoms of **nicotine withdrawal**. - As nicotine affects neurotransmitter systems (particularly dopamine, norepinephrine, and serotonin), cessation leads to neurochemical imbalances manifesting as anxiety, irritability, and restlessness. - This symptom typically peaks within the first week of cessation. *Hyperhidrosis* - **Hyperhidrosis** (excessive sweating) is actually a recognized symptom of **nicotine withdrawal**. - Increased sweating can occur as part of the autonomic nervous system dysregulation during the withdrawal period. - This is included among the physical withdrawal symptoms in standard diagnostic criteria. *Weight gain* - **Weight gain** is a well-documented and common consequence of **nicotine withdrawal**. - This occurs due to increased appetite, decreased metabolic rate (as nicotine's metabolic-enhancing effects cease), and behavioral substitution of smoking with eating. - Average weight gain is approximately 4-5 kg in the months following cessation.

Question 1

Key symptom in alcohol withdrawal syndrome is:

Accepted Answer

Tremors

Answer

Sleep disturbance

Answer

Visual hallucinations

Answer

Delirium

Question 2

All the following drugs are used to prevent relapse and maintain abstinence in cases of alcohol use disorder except?

Accepted Answer

Propranolol

Answer

Acamprosate

Answer

Naltrexone

Answer

Disulfiram

Question 3

Which substance is most commonly associated with experiencing a 'bad trip'?

Accepted Answer

LSD

Answer

Cocaine

Answer

Cannabis

Answer

Heroin

Question 4

What is the most common illicit drug that causes dependence?

Accepted Answer

Cannabis

Answer

Cocaine

Answer

Heroin

Answer

Amphetamine

Question 5

A 55-year-old chronic alcoholic male, presented with irrelevant talks, tremor and sweating. He had his last drink 3 days back. What is the probable diagnosis?

Accepted Answer

Delirium tremens

Answer

Korsakoff psychosis

Answer

Post-Acute withdrawal syndrome

Answer

Discontinuation syndrome

Question 6

The site of lesion in Korsakoff's psychosis is

Accepted Answer

Mammillary body

Answer

Frontal lobe

Answer

Cingulate gyrus

Answer

Corpus striatum

Question 7

Which of the following is NOT a diagnostic criterion for drug dependence?

Accepted Answer

Early completion of tasks

Answer

Taking substance in larger amounts than intended

Answer

Tolerance

Answer

Withdrawal symptoms

Question 8

A patient has been a known alcoholic for the last 20 years. He suddenly develops restlessness, tremors, and agitation. What is the most likely diagnosis?

Accepted Answer

Delirium tremens

Answer

Alcoholic hallucinosis

Answer

Wernicke's encephalopathy

Answer

Korsakoff's syndrome

Question 9

Which of the following is NOT a feature of Korsakoff syndrome?

Accepted Answer

Ataxia

Answer

Retrograde amnesia

Answer

Confabulation

Answer

Antegrade amnesia

Question 10

Which of the following is NOT a symptom of nicotine withdrawal?

Accepted Answer

Increased heart rate

Answer

Anxiety

Answer

Hyperhidrosis

Answer

Weight gain

Substance Use Disorders — MCQs

Substance Use Disorders — MCQs

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