Substance Use DIsorders Flashcards
Substance abuse - DSM 4
Maladaptive pattern of use leading to clinically significant impairment or distress for a 12 month period
Substance dependence - DSM 4
Maladaptive pattern of use leading to clinically significant impairment or distress, with at least 3 episodes
Substance use and addictive disorders - DSM 5
Defined as mild, moderate, or severe to indicate the level of severity, which is determined by the number of diagnostic criteria met by an individual
4 major groupings to diagnose a substance use disorder (SUD)
Impaired control, social impairment, risky use, pharmacological criteria (tolerance and withdrawal)
Diagnostic criteria
2 of the following must occur with a 12 month period: 1. The substance is often taken in larger amounts or over a longer period than was intended. 2. There is a persistent desire or unsuccessful effort to cut down or control use of the substance. 3. A great deal of time is spent in activities necessary to obtain the substance, use the substance, or recover from its effects. 4. Craving, or a strong desire or urge to use the substance. 5. Recurrent use of the substance resulting in a failure to fulfill major role obligations at work, school, or home. 6. Continued use of the substance despite having persistent or recurrent social or interpersonal problems caused or exacerbated by the effects of its use.
Tolerance
A need for markedly increased amounts of the substance to achieve intoxication or desired effect; a markedly diminished effect with continued use of the same amount of the substance.
Withdrawal
The characteristic withdrawal syndrome for that substance (as specified in the DSM- 5 for each substance).
Prevalence
20.2 million adults (8.4%) had a substance use disorder when asked about past year’s use. Of these, 7.9 million people had co-occurring mental and substance use disorder
Prevalence - gender difference
When asked about use in the past year - Men aged 12 or older are more likely than women to report illegal drug use (12.8% vs. 7.3%). However, women are more impacted by substance use than their male counterparts
Adolescence and SUDs
9 out of 10 people with SUDs started smoking, drinking, or using others drugs before age 18
Alcohol and adolescence
If adolescence started drinking before age 14, 47% are alcohol dependent. If adolescence started drinking before age 21, 9% are alcohol dependent
Risk factors for SUDs
Biological (genetics, neuroanatomy), psychological (trauma, learned behavior), and environmental
Psychological Risk Factors
Mental illness: self-medication; ADHD, low self-esteem, self-worth, or trauma
Trauma - Psychological Risk Factors
Rhesus monkeys who were stressed more after birth had higher rates of accepting alcohol offered to them (higher levels of cortisol found in the heaviest drinkers); Hx of child abuse and neglect are 1.5x more likely to use illicit drugs, especially marijuana, in middle adulthood; Hx of sexual assault is associated with a 3x greater risk for alcoholism, 4x for drug addiction
Biological Risk Factors
- Addiction is very heritable. Ex: 4x more likely to have alcohol use disorder if parent does.
- Twin studies: 40-60% concurrence of alcoholism
- Adoption studies: adopted to separate homes – both 3-4x’s more likely to have disordered drinking
Stockholm Adoption Study
Alcoholism in at least one birth parent increased the son’s risk of disordered drinking vs. alcoholism in the adoptive parents did not
The Reward Pathway
Reward pathway tries to make sure you repeat the behavior so it connects to regions of the brain that control memory and behavior to signal the brain’s motor center to strengthen the wiring for behaviors that help achieve the reward
Environmental Risk Factors
- Familial, socially, culturally normalized
- Peer pressure
- Interpersonal violence
- Directed advertisement
Alcohol’s impact on health
- Heart health: alcoholic cardiomyopathy, arrhythmia, strokes, hypertension
- Pancreas: pancreatitis
- Cancer: mouth, esophagus, throat, liver, breast
- Immune system: pneumonia & TB, slowed ability to ward off infection
- Head injuries from falls sustained when inebriated
- Cerebrovascular disease
Drugs and alcohol
- Tylenol and alcohol: liver failure, liver damage, yellow skin tone, cirrhosis, immune system breakdown
- Alcohol and sedatives: multiples sedative effect of both