Which drug's withdrawal can be fatal?

Which drug's withdrawal can be fatal?

• A. Caffeine
• B. Nicotine
• C. Alcohol
• D. Cannabis

Answer: (C)

Alcohol withdrawal can be fatal because the brain undergoes a dangerous rebound in activity after chronic alcohol use. Regular alcohol exposure enhances inhibitory GABA activity and suppresses excitatory glutamate; when drinking stops abruptly, this balance shifts back too quickly, causing neural hyperactivity. That can lead to severe autonomic instability, tremors, agitation, and, most dangerously, delirium tremens and seizures. Delirium tremens typically appears 48–72 hours after the last drink (often within a week) and can cause high fever, rapid heart rate, high blood pressure, dehydration, and electrolyte problems, which may result in cardiovascular collapse, pneumonia from aspiration, or other life-threatening complications if not treated in a medical setting. Because of these risks, alcohol withdrawal is treated medically with supervised detox, commonly using benzodiazepines to prevent seizures and excessive agitation, plus thiamine to prevent Wernicke’s encephalopathy. By contrast, withdrawal from caffeine, nicotine, or cannabis can be uncomfortable and bothersome but is not regarded as life-threatening in healthy individuals, though each can pose risks in people with other health issues. The key concept is that alcohol withdrawal carries a real risk of fatal complications due to severe CNS hyperexcitability and autonomic instability.

Alcohol withdrawal can be fatal because the brain undergoes a dangerous rebound in activity after chronic alcohol use. Regular alcohol exposure enhances inhibitory GABA activity and suppresses excitatory glutamate; when drinking stops abruptly, this balance shifts back too quickly, causing neural hyperactivity. That can lead to severe autonomic instability, tremors, agitation, and, most dangerously, delirium tremens and seizures. Delirium tremens typically appears 48–72 hours after the last drink (often within a week) and can cause high fever, rapid heart rate, high blood pressure, dehydration, and electrolyte problems, which may result in cardiovascular collapse, pneumonia from aspiration, or other life-threatening complications if not treated in a medical setting.

Because of these risks, alcohol withdrawal is treated medically with supervised detox, commonly using benzodiazepines to prevent seizures and excessive agitation, plus thiamine to prevent Wernicke’s encephalopathy. By contrast, withdrawal from caffeine, nicotine, or cannabis can be uncomfortable and bothersome but is not regarded as life-threatening in healthy individuals, though each can pose risks in people with other health issues. The key concept is that alcohol withdrawal carries a real risk of fatal complications due to severe CNS hyperexcitability and autonomic instability.