Substance use disorders Flashcards
Disease - noun
A disorder of structure or function in a human, animal, or plant, especially one that produces specific signs or
symptoms or that affects a specific
location and is not simply a direct
result of physical injury
10 classes of substance use disorders
○ Alcohol
○ Caffeine
○ Cannabis
○ Hallucinogens
○ Inhalants
○ Opioids
○ Sedatives, hypnotics, anxiolytics
○ Stimulants
○ Tobacco
○ Other
Reward center process
- ↑ dopamine into nucleus accumbens
promotes pleasure and reinforcing
behavior - Nucleus accumbens (post-dopamine
infusion), signals cerebral cortex, codes the experience, create memories, and guides future behavior
Dopaminergic neurons
- Located in the midbrain structures
- Substantia Nigra (SNc)
- Ventral Tegmental Area (VTA)
Dopaminergic neurons project their axons to:
- Striatum
- Dorsal prefrontal cortex
- Ventral prefrontal cortex
Substance-Induced Disorders
Substance-Induced Disorders:
Intoxication
Withdrawal
Other Substance Induced
Mental Disorders
What is NSDUH and what do they do?
The National Survey on Drug Use and Health (NSDUH): a nationwide
survey interviewing around 70,000 random individuals aged 12 and older
* Provide national/state-level estimates on the use of tobacco, alcohol, illicit
drugs (including non-medical use of prescription drugs), and mental health
* Assess and monitor the consequences of drug and alcohol use
Most common substance use disorder
Alcohol use disorder
Substance-Use Disorder:
Defines as a pathological pattern of
symptoms (cognitive, behavioral, physiologic) indicating that the
individual continues to use the substance despite significant
consequences
DSM Criteria for Substance use disorders
11 criteria under 4 headings
* Impaired control
* Social impairment
* Risky use
* Pharmacological criteria
Subtance use disorders DSM - Impaired control:
taking a larger amount of a substance or over a longer period of time than originally intended:
1. A need for markedly ↑ amounts of the substance to achieve intoxication or desired effect
2. Having a persistent desire or unsuccessful efforts to cut down or
control substance-use
3. The individual may spend a great deal of time obtaining, using, or recovering from the effects of the substance
4. Craving – an intense desire or urge for the drug that may occur at any time, and more likely in certain circumstances
Ex: driving by the bar on the way home from work
Substance use disorders DSM - Social Impairment criteria:
- Recurrent substance-use may result in a failure to fulfill major role obligations at work, school, or home
- Substance use may continue despite persistent or recurrent social or interpersonal problems caused or exacerbated by the effects of the substance
- Important social, occupational, or recreational activities may be given up or ↓ because of substance-use
Ex: Withdrawn from family activities and hobbies, to use
Substance-Use Disorders – risky use:
- Recurrent substance-use in situations in which it is physically
hazardous - May continue using despite knowledge of having a persistent or
recurrent physical or psychological problem likely caused by or
exacerbated by the substance
Substance-Use Disorders – Pharmacological criteria:
- Tolerance – needing ↑ dosing of the substance to achieve the desired effect or a markedly ↓ effect when the usual dose is consumed
* Lab tests may be helpful (ie ↑ blood levels of substance and little
intoxication) - Withdrawal* – a syndrome occurring when blood or tissue
concentrations of a substance decline after prolonged use
* Specific symptoms are dependent upon the substance
DSM-5 Criterion for Substance use disorders: Severity and Specifiers
Mild: 2-3 symptoms
Moderate: 4-5 symptoms
Severe: 6+ symptoms