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positive symptoms of schizophrenia
delusions and hallucinations; psychotic symptoms
hallucinations
sensory experiences that seem real to the person having it, but ocurs in the absense of any external perceptual stimulus
auditory hallucinations
most common; hearing sounds and voices; often someone insulting you
visual hallucination
seeing things that aren't there; second most common type of hallucination; can be small glances or concrete things you believe are there
tactile hallucinations
experiencing things on your skin
somatic hallucinations
feel as if something is happening inside the body; ex: electricity going through your body
olfactory and gustatory hallucinations
largely negative; ex: smelling decaying bodies
delusions
rigidly held inaccurate beliefs or misrepresented versions of reality
types of delusions
persecutory, referential, somatic, religious, grandiose, delusion of control
persecutory delusions
believing you are being persecuted or attacked
referential delusions
believing something you see or hear is specifically meant to send you a message
somatic delusions
the theme of the delusion involves bodily functions or sensations; ex: thinking that there's a chip in their brain
religious delusions
the context of the delusion is religious in nature
grandiose delusions
people thinking that they have a specual role/power/talent
delusion of control
believing that someone or somethign is controlling them in some way
non-bizarre delusions
delusions that could theoretically occur in real life
cotard delusion
the belief that you are dead (either literally or figuratively)
capgras delusions
the belief that a loved one has been replaced by an identical looking imposter
schizophrenia negative symptom categories
diminished verbal and nonverbal expression and diminished motivation and pleasure
components of diminished verbal and nonverbal expression
blunted affect and alogia
blunted affect
lack of range in tone or expression (verbal and nonverbal)
alogia
a reduction in the amount that someone speaks
components of diminished motivation and pleasure
avolition, asociality, and anhedonia
avolition
lack of goal-directed activity
asociality
spending less time with others
anhedonia
reduction of pleasure and enjoyment
anticipatory pleasure
wanting; thinkign about pleasure from future activities and how much pleasure you think you'll feel
consummatory pleasure
liking; the in-the-moment pleasure
disorganization symptoms of schizophrenia
reflects bizarre behaviors and disturbances in thinking
components of dizorganization symptoms
disorganized speech, catatonic behavior, and grossly disorganized behavior
disorganized speech
difficult to follow, conveys little meaning, goes on tangents, can include word salad, common in largely stable patients
catatonic behavior
decreased awareness of and reactivity to environment; associated with severe cases; immobility and muscle rigidity
grossly disorganized behavior
bizarre or inappropriate behavior; distinguished from aimless or reasonably agitated behavior
cognitive impairments with schizophrenia
working memory, executive function, social cognition, facial emotion recognition
phases of schizophrenia
prodromal phase, active phase, and residual phase
prodromal phase
negative symptoms with less severity
active phase
most severe phase; full symptoms
residual phase
not as extreme, but symptoms still pop up
schizophrenia diagnostic criteria
A: 2+ for at least a month of delusions, hallucinations, disorganized speech, grossly disorganized or catatonic behavior, and negative symptoms; B: impairment; C: disturbance for at least 6 months; D: rule out related disorders
schizophrenia in differential diagnoses
longest duration and lowest ratio of mood to psychotic symptoms
schizophreniform disorder
1-6 months of active stage; impairment to the degree of schizophrenia is not necessary
brief psychotic disorder
1 day to 1 month of active stage; needs 1 of delusions, hallucinations, or disorganization; associated with better outcomes
schizoaffective disorder
between schizophrenia and mood disorders in terms of mood to psychotic symptom ratio; requires delusions or hallucinations for 2 weeks without any other mood symptoms
mood disorder with psychotic features
highest ratio of mood to psychotic symptoms; psychotic symptoms only occur during a mood episode; mood congruent psychosis
delusional disorder
presence of 1+ delusions for at least 1 month; criteria A for schizophrenia isn't met and functioning is not as broadly impaired
lifetime prevalence of psychotic disorders
4%
lifetime prevalence of schizophrenia
1%
biological factors of schizophrenia
heritability (50% if both parents or identical twin has it), polygenic (several genes involved), reduced gray matter in the temporal lobe, reduced brain volume, dysconnectivity disorder, reduced PFC activation (associated with negative symptoms), neurochemical imbalance in dopamine system
hyperactive dopamine transmission in mesolimbic area
associated with positive symptoms
hypoactive dopamine transmission in PFC
associated with negative symptoms
environmental factors of schizophrenia
prenatal complications, birth complications, early adversity, stressors, drug abuse, living in urban areas, migration
psychosocial and environmental factors of schizophrenia
negative environmental exposures, social exclusion/deprivation, acute or prolonged stressors
1st generation/typical antipsychotics
invented in 1950s; causes extrapyramidal symptoms and tardive dyskinesia
extrapyramidal symptoms
movement dysfunctions
tardive dyskinesia
repetitive involuntary movements
2nd generation/atypical antipsychotics
invented 1990s; causes weight gain/obesity and slight risk of tardive dyskinesia
SZ relapse rates
65-70% in 1st year after hospitalization without medication, 40% with antipsychotics
high expressed emotion (family)
negative, critical and hostile attitudes on the part of the family; emotionally over-involved and intrusive; higher relapse rates for people living with a high EE family member
types of psychosocial treatment for schizophrenia
individual therapy, assertive community treatment, family-based treatment, social skills training
steps of individual therapy for schizophrenia
engagement, information gathering and formulation, intervention, and relapse prevention
working with delusions
need to decide whether to target cognitively or non-cognitively; collaborative empiricism, investigative analysis worksheets
working with hallucinations
may be able to target in conjunction with delusions; tracking, identifying associated thoughts/feeling/behavior, coping skills/distractions, questioning the voice, selective attention exercises
working with disorganized/negative symptoms
antipsychotics don't tend to be as effective; target the functional disruption; identification of barriers and motivators
psychological dependence
the urge to take a psychoactive substance for reasons such as alleviating a negative mood, avoiding withdrawal symptoms, and preparing for an activity
physiological dependence
a state of physical dependence on a drug caused by repeated usage that changes body chemistry (tolerance and withdrawal experienced)
tolerance
through the ongoing use of any susbtance the nervous system becomes less sensitive to the physiological effects of that drug over time
withdrawal
physiological symptoms a person experiences when drug is stopped; depends on the type of substance
nicotine withdrawal symptoms
drowsiness, muscle tremors, nausea
severe alcohol withdrawal symptoms
delirium tremens (life threatening, agitation, confusion, tremors, and psychotic symptoms)
psychoactive substance
a chemical substance that alters mood, changes perception, or changes brain functioning
polysubstance abuse
abusing more than one substance
9 classes of drugs
alcohol, caffeine, cannabis, hallucinogens, inhalants, opioids, sedatives, stimulants, tobacco
factors deciding addictive potential
how the drug works, dosage to achieve effect, route of administration, and potential for harm
what percentage of people prescribed opioids develop a substance abuse disorder?
up to 12%
what counties look like with the highest opioids per resident
smaller cities/larger towns, high % white residents, higher number of dentists and primary care physicians, more people uninsured or unemployed, more residents with diabetes/arthritis/disabilities
naloxone
substance that rapidly reverses the effects of an opioid overdose
fentanyl
a synthetic opioid significantly stronger than morphine; illegally produced and added to other substances to increase potency; fentanyl laced drugs are more likely to cause overdose/death
DSM-IV substance abuse
a person's ability to function becomes impaired; no tolerance, withdrawal, or compulsive use; less severe than dependence
DSM-IV substance dependence
repeated use of a drug often resulting in tolerance, withdrawal, or compulsive use; commonly called addiction
DSM-IV substance abuse diagnostic criteria
1 of the following: recurrent substance use: resulting in failure to fulfill role obligations, in hazardous situations, resulting in susbtance-related legal problems, continued use despite continued social or occupational problems caused by the drug
DSM-IV substance dependence diagnostic criteria
3+ of the following in 12month period: tolerance, withdrawal, substance taken in larger amounts or for longer periods of time than intended, persistent desire or failed efforts to reduce drug use, great deal of time spent trying to obtain the drug or recover from effects, social or occupational activities given up or reduced, continuous substance use despite knowledge of consequences
DSM-V alcohol use disorder diagnostic criteria
2+ symptoms in a 12-month period
classes of symptoms of alcohol use disorder
impaired control, social impairment, risky use, and tolerance and withdrawal
impaired control symptoms of AUD
substance taken in larger amounts or for longer periods than intended, persistent desire/failed efforts to reduce use, great deal of time spent obtaining/using/recovering, craving
social impairment symptoms of AUD
failure to fulfill role obligations, continued use despite persistent social or interpersonal problems, social/occupational/recreatiomnal activities given up because of use
risky use symptoms of AUD
recurrent use in physically hazardous situations, continued use despite knowledge of a persistent physical or psychological problem likely caused or exacerbated by substance
cannabis withdrawal symptoms
decreased appetite, decreased mood, taking cannabis to relieve withdrawal symptoms
gambling disorder
new; activated the reward systems; behavioral symptoms can be similar to substance abuse
short-term effects of alcohol
impaired speech and vision, poor coordination, interference in complex thought, loss of balance
long-term effects of alcohol
malnutrition, cirrhosis of the liver, stomach pains, chronic fatigue, oversensitivity, depression, poor judgment, Korsakoff syndrome
Korsakoff syndrome
severe syndrome that can occur following many years of heavy alcohol use; symptoms are memory deficit, confabulation, hallucinations, and vitamin b-1 deficiency
prevalence of comorbid AUD and PTSD
34-55%
prevalence of AUD in adolescents with ADHD
19-26%
prevalence of AUD in adults with ADHD
33%
nicotine receptor targets
nicotinic acetylcholine/dopamine
alcohol and sedative-hypnotics receptor target
GABA
marijuana receptor targets
dopamine and cannabinoid
methamphetamine and cocaine receptor target
dopamine
hallucinogen receptor target
serotonin
opponent process theory
an increase in positive feelings is followed by an increase in negative feelings