Substance Abuse reading Flashcards
define substance related and addictive disorders
one of a range of probems associated with the use and abuse of drugs (alcohol, cocaine, heroine or other substances people use to alter the way they think, feel and behave). they are hugely costly to humans in financial terms
impulse control disorder
a disorder in which a person acts as on irresistible but potentially harmful impulses
polysubstance abuse
the use of multiple mind-behaviour altering substances such as drugs
define substance
chemical compound ingested to alter mood and behaviour
define psychoactive substances
substances such as ecstacy, that alter mood or behaviour
-safe drugs = no, nicotine, caffeine. greater mortality than all illegal combined
substance use
the ingestion of psychoactive substances in moderate amounts that does not significantly interfere with social, educational or occupational functioning
intoxication
a phsyiological reaction, such as impaired judgement and motor ability as well as mood changes reacting from the ingestion of a psychoactive substance
substance abuse
a pattern of psychoactive substance use leading to significant distress or impairment in social and occupational roles and in hazardous situations
DSM5 defines by how significnat interferes with life and not by amounts ingested
study of drug use and job outcomes
repeated hard drug (barbituates, amphetamines etc) use predicted poor job outcomes after college (with everything else controlled for)
how should we define addiction
a maladaptive pattern of substance use characterised by the need for increased amounts to achieve the desired effect when the substance is withdrawn, unsuccesful efforts to control its use and substantial effort expended to seek it or recover from it = addiction
tolerance
the need for increased amounts of a substance to achieve the desired effect, and a diminished effect without continued use of the same amount
withdrawal
a severly negative physiological reaction to removal of a psychoactive substance which can be alleviated by the same or similar substance
eg headache in the morning without caffeine
alcohol = delerium, hallucinations, body tremours
cocaine = anxiety, lack of motivation, boredom
LSD = severe physical
cannabis = nervousness, appetite change, sleep disturbance
drug seeking behaviours
measure of dependence
eg stealing, even standing outside in the cold, alone to smoke
how DSM5 describes substance abuse and addiction
4 = abuse and dependence were different 5 = combined and described in terms of levels of severity mild = 2 or 3 /11 symptoms moderate = 4 or 5 /11 symptoms severe = 6 or more /11 symptoms
why is use of substances dangerous full stop
we can use them and not abuse them but we do not know ahead of time who might lose control and abuse / dependence
can there be dependence but no abuse
yes
cancer patient dependent on morphine but not abusing it as manages their pain
diagnostic issues with sud
used to be part of other problems = sociopathic personality disturbances
sign of moral weakness
genetics and bio vulnerability was hardly acknowledged
researchers estimate 3/4 of those in treatment = an additional dis (mood, anxiety, PTSD)
=6 week rule
explain the six week rule
if symptoms appear during intoxication or within 6 weeks after withdrawal from drugs = not considered a separate disorder
how do we group drugs
6 categories depressant stimulants opiates hallucinogens other drugs gambling
depressants
psychoactive substance that results in behavioural sedation eg alcohol, sedatives, hypnotic and anxiolytic drugs
stimulants
psychoactive substance that elevates mood, activity and altertness eg amphetamines, caffeine, cocaine and nicotine
opiates
addictive psychoactive substance (heroine, opium, morphine) that causes temporary euphoria and analgesia
hallucinogens
any psychoactive substance (LSD, mrijuana) that can produce delusions, hallucinations, paranoia and altered sensory perception
other drugs of abuse
other substances that are abused but do not fit neatly into one of the major drug categories (inhalants, steroids)
gambling disorder
unable to resist the urge to gamble = results in negative consequences
how depressents work
decrease CNS
reduce physiological arousal = relax
most likely to produce symptoms of physical dependence, tolerance and withdrawal
alcohol-related disorders
cognitive, bio, bahevioural andsocial processes associated with alcohol use and abuse
effects of alcohol when ingested on the body
esophagous
stomach (small amounts absorbed)
small intestine (easily absorbed)
blood = contact with all major organs
lumgs = vapourised and exhaled - how cops test
liver = broken down into CO2 and water by enzymes
effects of alcohol on the brain
number of neurotransmitter systems
GABA - inhibitory neurotransmitter
-interfers with firing of neurons attached
Cl- ions enter cell = less sensitive to the effects of other neurotransmitters
alcohol seems to reinforce cl- ion movement
=difficualt for neurons to communicate with one another
GABA pathway = why alcohol decreases anxiety
glutamate = excitatory
learning and memory
how alcohol effects our cognitive abilities
serotonin = mood, sleeping and eating
- overall many neurotransmitter systems with complex effects
withdrawal from chronic alcohol abuse
withdrawal delerium
the frighteneing hallucinations and body tremours that result when a heavy drinker withdraws from alcohol. also known as delerium tremes (DTs) - medical treatment can reduce
what effects the damage caused by alcohol
genetic vulnerability
frequency of use
length of drinking binges
blood alcohol levels
whether body is allowed to recover from binges
long term use = liver damage, pancreatitis, cardiovascular disorder and brain damage
dementia
general loss of intellectual abilities and can be direct result of neuroanatomy by excessive amounts of alcohol
does not always go away once brain damage has occured
note mild / moderate drinking may serve a protective role in cognitive decline as we age
fetal alcohol syndrom
learning difficulties, behavioural deficits and characteristic physical flaws resulting from heavy drinking by the victims mother when she was pregnant
-white americans
students and binging
men in college most likely
a students binge less than d-f students
binge drinking definition
+5 drinks on one occacion at least once a month
heavy if more than 5 days in a month
progression of alcoholics
normal to be functional
20% with severe alcohol dependence = have a spontaneous remission and do not reexperience problems with alcohol
dependence course is progressive for most people but abuse may be more variabe
drinking at an early age (11-14) = predictive of later alcohol related dis
study following male impatients at alcohol rehad centre
3/4 = moderate consequences of their drinknig
20s = demotions at work
30s = regular blackouts and serious withdrawal
40s = long term consequencies (hallucinations, convulsions, hepatities, pancreatitis)
not inevitable for everyone
research on mechanism for differences in easly alcohol use = ones response to the sedative effects affects later ise
so those who no slurred speech, staggering etc = more likely to abuse it
concern as high caffeine drinks now used as mixer = increase likelihood of later abuse?
alcohol and violent behaviour
correlational links
lab studies = alcohol makes you more aggressive but if this was larer outside of the lab = lots of interrelated features
so alcohol does not cause aggressive behaviours but it may increase a persons likelihood of engaging in impulsive acts and impair the ability to consider the consequences of acting impulsively
barbituates
a seditative (and addictive) drug such that is used as a sleep aid originally prescribed to help sleep in the 30s and 40s 50s = most abused drug in america
benzodiazepines
an antianxiety drug (valium) also used to treat insomnia
effective against anxiety (and at high potency = panic dis)
show more side effects
eg cognitive and motor implications and may result in substance dependence
relapse rates are extremely high when drug discontinued
originally = miracle cure for anxiety
safer than barbituates
rohypnol = date rape drug
barbituates clinical description
low dose = relaxing and mild feeling of well-being
larger doses = slurred speech, walking problems, concentrating and work problems
extremely high doses = death by suffocation as diaphragm relaxes
barbituate overdose = common method of suicide
benzos clinical description
calm individual and induce sleep
muscle relaxant and anticonvulsant
pleasant high and a reduction in inhibition (similar to alcohol)
after continued use tolerance and dependece can develop
withdrawal felt when tried to stop
sedative hypnotic and anxiolytic related disorders
cognitive, bio and behavioural and social problems associated with the use and abuse of sedative, hypnotic and anxiolytic drugs
dont differ significantly from alcohol in DSM 5
both include maladaptive behavioural changes (inappropriate sexual or aggressive behaviour, variable moods, impaired judgement and social / occupational functioning, slurred speech, motor co-ordination)
GABA - but different mechanism to alcohol
drugs + alcohol = synergistic effects = dangerous levels
stats of bezos and barbituates
barbituates decreasing, benzos increasing
those who do seek help for treatment = female, caucasian and +35
stimulants
caffeine, nicotine, amphetamine and cocaine
more alert and energetic
amphetamines
low dose = elevtion and vigour and reduce fatigue
but will crash back down = crash, depressed, tired
used for asthma, nasal decongestant, also reduce appetite = weight loss
also used for people to pull all nighters / give a boost
used for ADHD in kids but can be abused for pscyh effect
amphetamine use disorder
stimulant medication used to treat hypersomnia by keeping the person awake during the day and to treat narcolepsy including sudden onset episodes by suppressing REM sleep
severe intoxication / overdose = cause hallucinations, panic, agitation and paranoid delusions
tolerance quickly builds
withdrawal = apathy, prolonged periods of sleep, irritability and depression
crystal meth
ingested through smoking
marked aggresive tendencies and stays in the system longer than cocaine = particularly dangerous
originally popular in the community but spread elsewhere
high risk for dependency
repeated use of MDMA = lasting memory problems
how amphetamines act on the brain
stimulate CNS by enhancing the activity of norepinephrine and dopamine (helps release the neurotransmitters and blocks their reuptake)
too much = hallucinations and delusions
this effect = ideas about the causes of schizophrenia
cocaine
replaced amphetamines as stimulant of choice 1970s
from leaves of coca plant
small amounts increase alertness, euphoria, increased bp and pulse and insomnia and loss of appetite
effects = short lived
cocaine induced paranoia = common in users (2/3)
heart beats more rapidly and irregularly = can be fatal
used medically as a local anesthic and narcotic
stats on cocain abuse
white males = most common users
17% = crack cocaine too (crystallised, snorted)
increasing proportion of users seeking treatment are young, unemployed living in urban areas
up seems to come from the dopamine system
how cocaine works
inhaled
enters bloodstream through lungs. in the brain in seconds
acts on the pleasure pathway in the limbic system. occurs at synapses
cocaine molecules bind to the dopamine transporter blocking the route by which dopamine would re enter the transmitter cell. so accumuates in the synaptic space
how cocaine is different to other drugs
does not resemble that of many drugs = typically people find they have a growing inability to resist taking more
few negative side effects at first
but then disrupted sleep, increased tolerance, paranoia, other negative symptoms
become socially isolated
chronic use may equal premature ageing in the brain
different withdrawal = feelings of apathy and boredom = visicious cycel can easily develop (due to this atypical withdrawal pattern meant people originally didn’t think was addictive)
tobacco-related disorders defined
cognitive, bio, behavioural and social problens associated with the use and abuse of nicotine