- Pattern of substance use that lasts more than one month but does not meet the criteria for dependence 
- 21.6 million Americans suffer from substance-related disorder in 2013 

Drug/Substance Abuse 

- Falls under the umbrella of substance use disorder. The word "addiction" is not formally recognized in the DSM-5.
- Strong, uncontrollable compulsion to administer a drug of abuse to yourself due to dependence.
- Acts on reward circuitry in the brain (dopamine) and changes the chemical composition of your brain over time.
- According to the DSM 5, only gambling addiction has been listed as a diagnosable disorder, the rest of the behavioral addictions are yet to find themselves a place on the DSM manual.

Addiction

Alcohol Use Disorder is characterized by symptoms such as alcohol craving, recurrent use of alcohol that interferes with the fulfillment of one’s daily responsibilities, alcohol-seeking behavior, inability to control one’s drinking, drinking despite potential hazards (e.g., drinking while driving), the need for increased amounts of alcohol to achieve its effects (tolerance), and withdrawal symptoms when one stops or reduces alcohol intake (e.g., hand tremors, nausea, agitation, hallucinations). The disorder is distinguished as mild, moderate, or severe depending on the number of these symptoms that an individual may have: Mild cases present with two to three symptoms; moderate cases four to five symptoms; and severe cases six or more symptoms.

Alcohol Use Disorder (AUD)

The main differences between drug abuse and addiction are the level of use and the resulting change in the brain. That said, there is much overlap between the two.

Grinnell College

Google

- Drugs
- Drug effects
- Injury or psychiatric illness
- Drug abuse and addiction

Aspects of neuropharmacology

Breedlove, S. & Watson, N. (2017). Behavioral neuroscience, eighth edition. Oxford University Press.

Behavioral Neuroscience 8th Edition

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

Drug Effects 

Drug abuse and addiction

- Medicine used in the treatment of a disease 
- Examples include psychoactive drugs which alter functions of the brain and affect conscious experiences

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