Chapter 10: Substance-Related, Addictive and Impulse-Control Disorders Flashcards
substance use
doesn’t mean intoxicated
taking moderate amounts of a substance in a way that doesn’t interfere with functioning
substance intoxication
physical reaction to a substance (e.g. drunk)
substance abuse
use in a way that is dangerous or causes substantial impairment (e.g. affecting job or relationships)
substance dependence
may be defined by tolerance and withdrawal
sometimes defined by drug-seeking behavior (e.g. spending too much money on substance)
tolerance
needing more of a substance to get the same effect/reduced effects from the same amount
withdrawal
physical symptom reaction when substance is discontinued after regular use
withdrawal symptoms will be the opposite effect of the substance (e.g. taking dopamine, body overcompensates, stop taking dopamine, body still compensating, making you depressed)
dementia tremors
shaking of the hands in withdrawal of the substance, alcohol withdrawal
Five Main Categories of Substances
Depressants: alcohol, sedative, anxiolytic drugs
Stimulants: Increase alertness and elevate mood (cocaine, nicotine)
Opiates: euphoria (herion, morphine, codeine)
Hallucinogens: alter sensory perception (marijuana, LSD)
Others: inhalants, anabolic steroids, medications
Substance Use Disorders
pattern of substance use leading to significant impairment and distress
need 2+ symptoms within a year
substance intoxication for different types of substances (alcohol, stimulants)
substance use disorders for different types of substances
withdrawal from different types of substances
The Depressants: Alcohol-Related Disorders
central nervous system depressant, influences several neurotransmitter systems, specific target is GABA (makes neural cells worse at firing)
Effects of chronic use: intoxication and withdrawal, associated brain conditions-dementia and wernicke’s disease, fetal alcohol syndrome
Sedative, Hypnotic, or Anxiolytic Related Disorders
effects are similar to large doses of alcohol
exert influence via GABA
Sedatives: calming (barbiturates)
Hypnotic: sleep inducing
Anxiolytic: anxiety reducing (benzodiazepines)
Stimulants
increase alertness and energy
examples: amphetamines, cocaine, nicotine, and caffeine
It’s intoxication when accompanied by physical changes: dilated pupils, weight loss, vomiting, weakness, chills, change in HR/BP
Amphetamines
stimulant
Effects: elation, vigor, reduce fatigue
these effects are usually followed by extreme fatigue and depression
the drug enhances the release of norepinephrine and dopamine
ADHD: adderall, ritalin
Cocaine
stimulant
Effects: short lived sensations of elation, vigor, reduced fatigue. Highly addictive, but addiction develops slowly
cycle through patterns of tolerance and withdrawal (characterized by apathy and boredom)
Nicotine
Stimulant
the most addictive, hardest one to get off of. Not dangerous withdrawals.
Build tolerance really quickly. Feel the good effects for about one month, after that, continue to smoke to stop the withdrawal symptoms, not because it makes you feel good.
Caffeine
Stimulant
Effects: “gentle” stimulant. small doses elevate mood and reduce fatigue. regular use can result in tolerance and dependence. Blocks the reuptake of neurotransmitter adenosine.
Associated with physical symptoms including restlessness, anxiety, insomnia, flushed face, diuresis, GI disturbance, muscle twitching, rambling thoughts or speech, elevated or irregular heartbeat, excitement, inexhaustibility, motor agitation
What is the worst substance you can take?
Methamphetamines. Because it makes you psychotic very quickly. Psychosis.
What is the most addictive stimulant?
Nicotine
Opioids
Effects: activate body’s endorphins; low doses induce euphoria, drowsiness, and slowed breathing; high doses can cause death; withdrawal symptoms can be lasting and severe
opiate vs opioids
Hallucinogens
change the way the user perceives the world
may produce: delusions, paranoia, hallucinations, altered sensory perception
examples: marijuana and LSD
Genetic Influences
substance has a genetic component
~10% biological component
~90% environment
What are the two parts to substance abuse?
1) to take away the withdrawal symptoms
2) to produce a pleasurable feeling
Opponent-process theory
why the crash after drug use fails to keep people from using: drugs themselves are easiest way to alleviate feelings of withdrawal
Cognitive factors
role of expectancy effects: people use drugs when they anticipate positive effects
What is triggered by cues (mood, environment, availability of drugs)?
Cravings
Safe drug with a similar chemical composition as the abused drug
Treatment
Agonist Substitution
examples: methadone and nicotine gum
Drugs that block or counteract the positive effects of substances
Treatment
Antagonist Treatment
examples: naltrexone for opiate and alcohol
Drugs that make use of substances extremely unpleasant
Treatment
Aversive Treatment
examples: antabuse
Community support programs
AA or NA…
helpful for maintaining abstinence, not for primary cure
How to balance treatment goals
controlled use (cutting back) is much more effective than complete abstinence (much more likely to relapse)