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Related Concept Videos

Drug Abuse and Addiction: Pharmacological Phenomena01:15

Drug Abuse and Addiction: Pharmacological Phenomena

Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not necessarily...
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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
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Drug Dependence01:17

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Medications are typically administered to achieve therapeutic effects. Some drugs can modify an individual's mood and perception, frequently resulting in various enjoyable experiences. However, this can result in drug dependency, a condition marked by continuous drug use despite potential negative consequences. Drug dependency primarily falls into two categories: psychological and physical dependence. Psychological dependence occurs when the pleasurable feelings induced by the drug...
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Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
Self-Presentation: Self-Monitoring and Self-Handicapping02:05

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People can go to great lengths to protect their self-image and present themselves in ways that they want others to see them. Sociologist Erving Goffman presented the idea that a person is like an actor on a stage. Calling his theory dramaturgy, Goffman believed that we use “impression management” to present ourselves to others as we hope to be perceived. Each situation is a new scene, and individuals perform different roles depending on who is present (Goffman, 1959). Think about the way you...
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Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...

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Related Experiment Video

Updated: Jun 4, 2026

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
05:12

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Published on: June 23, 2023

Individual vulnerability to addiction.

Joel Swendsen1, Michel Le Moal

  • 1National Center for Scientific Research-CNRS, Université Victor Segalen, Bordeaux, France. Joel.Swendsen@u-bordeaux2.fr

Annals of the New York Academy of Sciences
|January 29, 2011
PubMed
Summary
This summary is machine-generated.

Most drug users do not develop addiction. Individual differences in cultural, psychological, and genetic factors influence addiction vulnerability, offering targets for prevention and intervention.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Genetics
  • Epidemiology

Background:

  • Addiction research often focuses on substance quantity and pharmacological interventions.
  • Epidemiology and clinical studies show most drug users do not become dependent.
  • Individual propensity to addiction is influenced by multiple factors.

Purpose of the Study:

  • To review paradigms of addiction.
  • To summarize research on individual differences contributing to addiction.
  • To highlight the importance of an integrated, interdisciplinary approach to addiction research.

Main Methods:

  • Literature review of neuroscience, epidemiology, and clinical research.
  • Synthesis of studies on cultural, sociodemographic, psychiatric, psychological, and genetic factors.
  • Analysis of interactions between vulnerability factors.

Main Results:

  • Addiction is not solely determined by substance use.
  • Individual vulnerability encompasses a complex interplay of environmental, psychological, and biological factors.
  • Specific sources of vulnerability can be modified or managed.

Conclusions:

  • Understanding individual differences is crucial for addiction research.
  • An integrated, interdisciplinary approach is essential for effective addiction prevention and intervention.
  • Targeting individual vulnerabilities offers promising avenues for reducing addiction rates.