Substance Use Disorders Practice Questions

Q: Which of the following is NOT a symptom associated with chronic cocaine abuse?

Dilated pupils, rapid pulse and sweating.. ***Dilated pupils, rapid pulse and sweating.***- These manifestations (mydriasis, tachycardia, and diaphoresis) are classic signs of **acute cocaine intoxication** resulting from massive sympathetic nervous system overstimulation.- While they occur every time the drug is used, they reflect the transient state of acute drug action rather than structural, neurological, or hygienic **long-term complications** of chronic abuse.*Nasal/palatal perforation.*- Chronic intranasal cocaine abuse leads to severe **vasoconstriction** and subsequent **ischemic necrosis** of the cartilaginous and bony structures in the septum and palate.- This structural destruction is a definitive **long-term consequence** that may lead to chronic sinusitis, dysphonia, and septal perforation.*Black tongue and teeth.*- This presentation is a characteristic finding in individuals who chronically smoke **crack cocaine**, often referred to as "crack mouth."- It is caused by a combination of extreme heat exposure, chemical irritation from the smoke, and severe neglect of **oral hygiene** associated with addiction.*Hallucination of insects crawling on the skin (formication).*- This severe **tactile hallucination**, often colloquially termed "cocaine bugs," is a known psychiatric consequence of **chronic, high-dose stimulant abuse**.- It results from neurotoxicity and is a marker of severe dopaminergic system dysregulation due to long-term substance use.

Q: What is the most common symptom of cannabis intake?

Dream-like state. ***Dream-like state***- The most common and defining acute symptom of cannabis intoxication is the **psychoactive effect**, leading to altered sense of time, altered sensory perception, and a relaxed, sometimes euphoric, **dream-like state**.- This perceptual alteration is due to the agonist activity of **delta-9-tetrahydrocannabinol (THC)** primarily on central **CB1 receptors**. *Anxiety*- While **anxiety**, **paranoia**, and panic attacks are frequently reported adverse effects, particularly with high potency strains or accidental overdose, they are not the primary anticipated or most common effect.- The typical desired effect is generally **relaxation** and **euphoria**, which contrasts with the experience of acute anxiety.*Depressed mood*- Acute cannabis intoxication usually leads to a transient sense of **well-being** or **euphoria**, rather than an acutely depressed mood.- A primary depressive state or **amotivational syndrome** is more typically associated with chronic, heavy use or withdrawal states, not the initial acute intoxication.*Decreased appetite*- Cannabis is famously known for significantly **increasing appetite**, often termed **"the munchies,"** due to the stimulation of cannabinoid receptors in appetite centers.- The active component, THC, acts as an **orexigenic agent**, making decreased appetite an incorrect association.

Q: Which one of the following substances induces no dependence?

LSD. ***LSD*** - **LSD (lysergic acid diethylamide)** is a hallucinogen with the **lowest dependence potential** among the given options. - It does **not cause physical dependence** - there is no withdrawal syndrome when use is stopped. - **Psychological dependence** is extremely rare, as rapid tolerance develops (within days) and dissipates quickly, making continuous use unrewarding. - Users do **not experience compulsive drug-seeking behavior** or physical withdrawal symptoms characteristic of addictive substances. - In the context of this question, LSD is considered to have **negligible dependence potential** compared to other substances. *Barbiturates* - **Barbiturates** are CNS depressants with **high potential** for both physical and psychological dependence. - Chronic use leads to tolerance requiring higher doses, and **withdrawal can be life-threatening** (seizures, delirium tremens, cardiovascular collapse). - Classified as Schedule II-IV controlled substances due to high abuse potential. *Heroin* - **Heroin** (diacetylmorphine) is an opioid with **extremely high potential** for both physical and psychological dependence. - Rapid onset and intense euphoria create powerful reinforcement of drug-seeking behavior. - **Withdrawal syndrome** includes severe dysphoria, muscle aches, sweating, nausea, and intense cravings, driving continued use. *Cannabis* - **Cannabis** has **moderate dependence potential**, particularly with chronic high-potency use. - **Cannabis Use Disorder** is recognized in DSM-5, with about 9% of users developing dependence (30% for daily users). - **Withdrawal syndrome** includes irritability, anxiety, sleep disturbances, decreased appetite, restlessness, and cravings. - Physical dependence is less severe than opioids or sedatives but is clinically significant.

Q: A patient stopped alcohol consumption for 3 days and presented with irritability, disorientation, paranoid delusions, agitation, visual hallucinations, and altered sensorium. What is the likely diagnosis in this case?

Alcohol withdrawal delirium. ***Alcohol withdrawal delirium*** - The combination of **irritability, disorientation, paranoid delusions, agitation, visual hallucinations, and altered sensorium** developing 3 days after cessation of alcohol is classic for **delirium tremens**, the most severe form of alcohol withdrawal. - This condition is a medical emergency that can lead to seizures, cardiovascular collapse, and death if not treated promptly. *Wernicke's encephalopathy* - Characterized by the triad of **ataxia, ophthalmoplegia, and confusion**, which is due to **thiamine deficiency** and is not fully consistent with the patient's presentation. - While it can occur in chronic alcoholics, the rapid onset of severe agitation, hallucinations, and paranoia points more towards active withdrawal. *Korsakoff's psychosis* - This is a chronic neuropsychiatric syndrome that typically follows untreated Wernicke's encephalopathy, characterized by severe **anterograde and retrograde amnesia** and **confabulation**. - It does not present with the acute delirium, agitation, and prominent hallucinations described. *Alcohol intoxication* - This occurs when a person has recently consumed a large amount of alcohol, leading to symptoms like **slurred speech, impaired coordination, mood changes, and reduced inhibition**. - The patient's symptoms are occurring *after* stopping alcohol consumption for 3 days, indicating withdrawal, not active intoxication.

Q: After 72 hours of Cessation of alcohol, which of the following withdrawal symptoms can be seen in alcoholic patients?

Delirium tremens. **Delirium tremens** - **Delirium tremens** typically manifests **48-96 hours** (2-4 days) after the last drink, making it a key symptom seen around the 72-hour mark. - It involves **severe confusion**, disorientation, **hallucinations** (visual, auditory, tactile), agitation, and autonomic instability like **tachycardia**, hyperthermia, and hypertension, representing the most severe form of alcohol withdrawal. *Seizures* - **Alcohol withdrawal seizures** usually occur much earlier, within **6 to 48 hours** after cessation. - While possible within the broader withdrawal timeline, they are more characteristic of the initial stages rather than the 72-hour peak of delirium tremens. *Hallucinations* - **Alcoholic hallucinosis** typically develops **12-24 hours** after cessation and can persist for days. - While hallucinations are a component of delirium tremens, isolated hallucinosis usually presents earlier without the global cognitive impairment and autonomic instability of DTs. *Tremors* - **Tremors** are among the first signs of alcohol withdrawal, appearing as early as **6-12 hours** after the last drink. - These early symptoms are usually self-limiting or managed with benzodiazepines and precede the more severe stages seen at 72 hours.

Q: Which of the following is a true statement about Korsakoff syndrome?

Anterograde amnesia with loss of recent memory. ***Anterograde amnesia with loss of recent memory*** - **Korsakoff syndrome** is primarily characterized by severe **anterograde amnesia**, making it difficult for patients to form new memories after the onset of the condition. - Patients often present with **significant loss of recent memory**, while older, remote memories may remain relatively preserved. *Loss of implicit memory and immediate recall* - While certain aspects of memory are impaired, immediate recall (e.g., repeating a short list of words immediately after hearing them) is often **relatively spared** in Korsakoff syndrome. - **Implicit memory**, which involves unconscious learning of skills and habits, is also typically **intact**, allowing patients to learn new motor skills despite their declarative memory deficits. *Triad of confusion, ophthalmoplegia, and ataxia* - This triad describes **Wernicke encephalopathy**, which is an acute neurological emergency caused by thiamine deficiency, often preceding Korsakoff syndrome. - Korsakoff syndrome, on the other hand, is a more **chronic neuropsychiatric condition** that often develops in individuals who have recovered from an episode of Wernicke encephalopathy. *Loss of long-term memory but intact personality* - While it primarily impacts the formation of new long-term memories, established **remote long-term memories** from before the illness are often **relatively preserved**. - While personality changes can occur due to the brain damage, the statement "intact personality" is **not a defining hallmark** used to differentiate Korsakoff syndrome from other memory disorders.

Q: Disulfiram is a type of:-

Aversion therapy. **Aversion therapy** - **Disulfiram** works by inhibiting aldehyde dehydrogenase, leading to the accumulation of acetaldehyde when alcohol is consumed, which causes unpleasant symptoms like flushing, nausea, and vomiting. - This creates an **aversive reaction** to alcohol, which discourages further drinking, making it a form of aversion therapy. *Anticraving therapy* - While disulfiram can indirectly reduce cravings by making alcohol consumption unpleasant, its primary mechanism is not to directly modulate craving pathways in the brain. - Drugs like **naltrexone** or **acamprosate** are more commonly categorized as specific anticraving agents for alcohol dependence. *Detoxification* - **Detoxification** refers to the supervised withdrawal from a substance to manage acute withdrawal symptoms and stabilize the patient. - Disulfiram is used after detoxification to help maintain abstinence, not during the acute withdrawal phase. *Opioid management therapy* - **Opioid management therapy** involves medications like **methadone** or **buprenorphine** used to treat opioid dependence. - Disulfiram is specifically used for **alcohol use disorder** and has no role in managing opioid dependence.

Q: All are true about delirium tremens, except:

Normal sleep-wake cycle. ***Normal sleep wake cycle*** - Delirium tremens is characterized by a **disrupted sleep-wake cycle**, often with **insomnia** and **nocturnal exacerbation** of symptoms, making a normal sleep-wake cycle an incorrect statement. - The brain's regulatory mechanisms for sleep are significantly impaired due to the withdrawal of alcohol's suppressive effects. *Clouding of consciousness* - **Clouding of consciousness** is a hallmark feature of delirium tremens, representing a reduced awareness of the environment and impaired attention. - Patients often present with **disorientation** regarding time, place, and person. *Visual hallucinations* - **Visual hallucinations** are very common in delirium tremens, often described as vivid, frightening, and involving small animals or insects. - These hallucinations contribute to the patient's **agitation** and fear. *Coarse tremors* - **Coarse tremors**, particularly of the hands and face, are a classic physical sign of alcohol withdrawal and an integral part of delirium tremens. - These tremors are due to the **overactivity of the sympathetic nervous system** as the inhibitory effects of alcohol wear off.

Q: Most common symptom of alcohol withdrawal is:

Tremor. ***Tremor*** - **Tremor** is one of the earliest and most common symptoms of alcohol withdrawal, often appearing within 6-12 hours after reduction or cessation of alcohol intake. - This symptom is due to hyperactivity of the central nervous system as it attempts to re-establish homeostasis without the depressant effects of alcohol. *Diarrhea* - While gastrointestinal issues can occur during alcohol withdrawal, **diarrhea** is not considered the most common or primary symptom. - Other more prominent symptoms related to central nervous system excitation typically precede or overshadow GI complaints. *Rhinorrhea* - **Rhinorrhea (runny nose)** is not a characteristic or common symptom of alcohol withdrawal. - This symptom is more commonly associated with opioid withdrawal or allergic reactions. *Bodyache* - **Body aches** can be a general symptom of discomfort or fatigue during withdrawal states, but it is not the most specific or common symptom of alcohol withdrawal. - Muscle cramps or myalgia can occur, but generalized body aches are less frequent than more distinct neurological manifestations.

Question 1

Which of the following is NOT a symptom associated with chronic cocaine abuse?

Accepted Answer

Dilated pupils, rapid pulse and sweating.

Answer

Black tongue and teeth.

Answer

Hallucination of insects crawling on the skin (formication).

Answer

Nasal/palatal perforation.

Question 2

What is the most common symptom of cannabis intake?

Accepted Answer

Dream-like state

Answer

Anxiety

Answer

Depressed mood

Answer

Decreased appetite

Question 3

All of the following statements are correct except:

Accepted Answer

Flumazenil is used for the management of long-term alcohol dependence syndrome

Answer

Opioid withdrawal is rarely fatal

Answer

Buprenorphine can be used for the management of opioid withdrawal

Answer

Cannabis withdrawal is associated with minimal physical symptoms

Question 4

Which one of the following substances induces no dependence?

Accepted Answer

LSD

Answer

Barbiturates

Answer

Heroin

Answer

Cannabis

Question 5

A patient stopped alcohol consumption for 3 days and presented with irritability, disorientation, paranoid delusions, agitation, visual hallucinations, and altered sensorium. What is the likely diagnosis in this case?

Accepted Answer

Alcohol withdrawal delirium

Answer

Wernicke's encephalopathy

Answer

Korsakoff's psychosis

Answer

Alcohol intoxication

Question 6

After 72 hours of Cessation of alcohol, which of the following withdrawal symptoms can be seen in alcoholic patients?

Accepted Answer

Delirium tremens

Answer

Seizures

Answer

Hallucinations

Answer

Tremors

Question 7

Which of the following is a true statement about Korsakoff syndrome?

Accepted Answer

Anterograde amnesia with loss of recent memory

Answer

Loss of implicit memory and immediate recall

Answer

Triad of confusion, ophthalmoplegia, and ataxia

Answer

Loss of long-term memory but intact personality

Question 8

Disulfiram is a type of:-

Accepted Answer

Aversion therapy

Answer

Anticraving therapy

Answer

Detoxification

Answer

Opioid management therapy

Question 9

All are true about delirium tremens, except:

Accepted Answer

Normal sleep-wake cycle

Answer

Clouding of consciousness

Answer

Visual hallucinations

Answer

Coarse tremors

Question 10

Most common symptom of alcohol withdrawal is:

Accepted Answer

Tremor

Answer

Diarrhea

Answer

Rhinorrhea

Answer

Bodyache

Substance Use Disorders — MCQs

Substance Use Disorders — MCQs

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